Clinician Reviews

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

A version of this article first appeared on Medscape.com.

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

A version of this article first appeared on Medscape.com.

Has COVID replaced syphilis as the great imitator? At the turn of the 20th century, Sir William Osler was quoted as saying, “He who knows syphilis knows medicine.”

If you have any doubts about the “imitator” analogy, simply use any broad search engine or AI portal and enter “what is the differential diagnosis of primary syphilis, or secondary syphilis, or tertiary syphilis?” A plethora of diseases across many body systems appears.
 

Another Great Pretender?

Did you or do you now have long COVID? How do you know? Do you even know what long COVID is? How would you diagnosis it?

When asked about long COVID, this is what large language model source bard.google.com had to say:

Long COVID, also known as post-COVID conditions or PASC, is a complex condition that can occur in people who have had COVID-19, even if their initial illness was mild or even asymptomatic. It’s characterized by a wide range of symptoms that can last for weeks, months, or even years after the initial infection.

Symptoms of long COVID can include: fatigue, shortness of breath, brain fog (trouble thinking or concentrating), loss of smell or taste, sleep problems, muscle pain, joint pain, headache, dizziness, depression or anxiety, heart palpitations, gastrointestinal problems.

Duh!!! It reads much like a continuation of the symptoms of acute COVID. Bard continued:

The exact cause of long COVID is still unknown, but there are several theories. One possibility is that the virus itself can damage organs and tissues, leading to ongoing symptoms. Another possibility is that the immune system’s response to the virus can continue to cause inflammation even after the virus is gone.

Human intelligence source Wikipedia says this:

Long COVID or long-haul COVID is a group of health problems persisting or developing after an initial COVID-19 infection. Symptoms can last weeks, months or years and are often debilitating. The World Health Organization defines long COVID as starting three months after infection, but other definitions put the start of long COVID at four weeks.

Highly varied, including post-exertional malaise (symptoms made worse with effort), fatigue, muscle pain, shortness of breath, chest pain, and cognitive dysfunction (brain fog).
 

Acute COVID to Long COVID

The World Health Organization estimates that 36 million people in the European region have developed long COVID in the first 3 years of the pandemic. That›s a lot.

We all know that the common signs and symptoms of acute COVID-19 include fever or chills, a dry cough and shortness of breath, feeling very tired, muscle or body aches, headache, loss of taste or smell, sore throat, congestion, runny nose, nausea, vomiting, and diarrhea. Except for the taste and smell findings, every one of these symptoms or signs could indicate a different virus infection or even some type of allergy. My point is the nonspecificity in this list.

Uncommon signs and symptoms of acute COVID include a flat skin rash covered with small bumps, discolored swollen areas on the fingers and toes (COVID toes), and hives. The skin of hands, wrists, or ankles also can be affected. Blisters, itchiness, rough skin, or pus can be seen.

Severe confusion (delirium) might be the main or only symptom of COVID-19 in older people. This COVID-19 symptom is linked with a high risk for poor outcomes, including death. Pink eye (conjunctivitis) can be a COVID-19 symptom. Other eye problems linked to COVID-19 are light sensitivity, sore eyes, and itchy eyes. Acute myocarditis, tinnitus, vertigo, and hearing loss have been reported. And 1-4 weeks after the onset of COVID-19 infection, a patient may experience de novo reactive synovitis and arthritis of any joints.

So, take your pick. Myriad symptoms, signs, diseases, diagnoses, and organ systems — still present, recurring, just appearing, apparently de novo, or after asymptomatic infection. We have so much still to learn.

What big-time symptoms, signs, and major diseases are not on any of these lists? Obviously, cancer, atherosclerotic cardiovascular diseases, obesity, bone diseases, and competitive infections. But be patient; the lingering effects of direct tissue invasion by the virus as well as a wide range of immunologic reactions may just be getting started. Mitochondrial damage, especially in muscles, is increasingly a pathophysiologic suspect.

Human diseases can be physical or mental; and in COVID, that twain not only meet but mix and mingle freely, and may even merge into psychosoma. Don’t ever forget that. Consider “fatigue.” Who among us, COVID or NOVID, does not experience that from time to time?

Or consider brain fog as a common reported symptom of COVID. What on earth is that actually? How can a person know they have brain fog, or whether they had it and are over it?

We need one or more lab or other diagnostic tests that can objectively confirm the diagnosis of long COVID.
 

Useful Progress?

A recent research paper in Science reported intriguing chemical findings that seemed to point a finger at some form of complement dysregulation as a potential disease marker for long COVID. Unfortunately, some critics have pointed out that this entire study may be invalid or irrelevant because the New York cohort was recruited in 2020, before vaccines were available. The Zurich cohort was recruited up until April 2021, so some may have been vaccinated.

Then this news organization came along in early January 2024 with an article about COVID causing not only more than a million American deaths but also more than 5000 deaths from long COVID. We physicians don’t really know what long COVID even is, but we have to sign death certificates blaming thousands of deaths on it anyway? And rolling back the clock to 2020: Are patients dying from COVID or with COVID, according to death certificates?Now, armed with the knowledge that “documented serious post–COVID-19 conditions include cardiovascular, pulmonary, neurological, renal, endocrine, hematological, and gastrointestinal complications, as well as death,” CDC has published clear and fairly concise instructions on how to address post-acute COVID sequelae on death certificates.

In late January, this news organization painted a hopeful picture by naming four phenotypes of long COVID, suggesting that such divisions might further our understanding, including prognosis, and even therapy for this condition. Among the clinical phenotypes of (1) chronic fatigue–like syndrome, headache, and memory loss; (2) respiratory syndrome (which includes cough and difficulty breathing); (3) chronic pain; and (4) neurosensorial syndrome (which causes an altered sense of taste and smell), overlap is clearly possible but isn›t addressed.

I see these recent developments as needed and useful progress, but we are still left with…not much. So, when you tell me that you do or do not have long COVID, I will say to you, “How do you know?”

I also say: She/he/they who know COVID know medicine.

A version of this article first appeared on Medscape.com.

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

Exercise should no longer be a mere “complement” or a standard recommendation within healthy lifestyle guidelines, say experts. Recent evidence confirms its physiological importance and endorses its beneficial and therapeutic effects on overall health, particularly in the case of obesity and its comorbidities. These findings emphasized the reasons to include exercise prescription in addressing this condition. This conclusion emerged from discussions among experts in Physical Activity and Sports Sciences during the XIX Congress of the Spanish Society for Obesity, where the role of physical exercise as a therapeutic strategy was analyzed from various perspectives.

Javier Butragueño, PhD, coordinator of the Exercise Working Group at the Spanish Society of Obesity, emphasized the need to “reposition” the role of exercise and the message conveyed to the population. “We must move beyond the typical recommendation to ‘just walk’ and rethink this message. When working with patients with obesity, you realize that, for example, the guideline of 10,000 steps per day makes little sense for those who weigh 140 kg, have been sedentary for a long time, and have not reached 2000 daily steps. Clinically, it becomes evident that current recommendations may not align with the needs of these patients,” he said.
 

Precision Focus

Dr. Butragueño highlighted the necessity of shifting the central focus from weight-related variables alone. While weight is crucial, evidence suggests that it should be evaluated along with other strategies, such as nutrition and pharmacology.

“The approach must change to view exercise as a metabolism regulator,” said Dr. Butragueño. “For specialists, this means educating the population about the need to stay active for overall health. This is a disruptive message because the prevailing idea, almost obsessive, associates exercise primarily with weight loss, a completely incorrect approach that can even be detrimental in some cases.”

Dr. Butragueño emphasized the supportive role of physical exercise in interventions for these patients. “Data show that it is both an enhancer and a co-adjuvant in strategies that also include psychology and endocrinology. It should be part of the approach to obesity but individualized and phenotyped to give physical activity the necessary dimension in each specific case.”

As an example of this adaptability in therapeutic strategy, Dr. Butragueño referred to addressing binge eating disorder. “In this case, specialists must acknowledge that sports are a third-line option, always behind the psychologist, who plays a primary role. Exercise is used to enhance the emotions triggered through its practice, considering that many of these patients maintain a very negative relationship with their bodies.”
 

Spanish ‘Prescription Guide’

During his presentation, Dr. Butragueño introduced the positioning document from the Exercise Group of the Spanish Society of Obesity, which is aimed at designing physical activity programs for patients with obesity. He emphasized its importance as a much-needed effort at proposing intervention strategies to guide health professionals and establish a reference framework for collaboration across different approaches to obesity.

Among the noteworthy aspects of the guidelines outlined in this document, Dr. Butragueño highlighted the assessment and classification of physical activity into four levels based on each patient’s physical condition. “This aspect should be studied by the scientific community because ‘humanizing’ exercise prescription by understanding individuals’ needs beyond their BMI is crucial.”

He also discussed the strategy outlined in the document that he said is crucial for implementing an exercise program. “Essentially, it involves two guidelines: First, engage in physical activity for at least 30-60 minutes in what we call zone 2. This includes activities like walking, cycling, or rowing, where one can speak easily with another person or sing without getting out of breath. This is a fundamental part of addressing obesity, as it improves mitochondrial biogenesis, the correct utilization of fatty acids, which is a significant concern in the pathophysiology of obesity and other diseases like cancer.”

The second strategy involves strength training alone or combined with aerobic-cardiovascular exercise. “Studies show that just 20 minutes of strength training 1 day a week for 10 consecutive weeks significantly improves strength levels in sedentary individuals.”

Dr. Butragueño emphasized that to date, there is no doubt that the most effective approach is to combine strength exercises with cardiorespiratory exercises. “This is not only to address obesity but also because, beyond weight impact, this training has proven additional benefits, such as increased oxygenation and improved cognitive capacity.”

Finally, regarding the challenges this shift in focus poses for exercise specialists, Dr. Butragueño pointed out, “Synergies in obesity treatment require sports experts to receive training in other disciplines, elevating our knowledge level and communication with the medical community to emphasize that we are indeed talking about exercise physiology applied to a condition like obesity.”

“In addition, as scientists, we must challenge ourselves to disseminate information at the societal level, surpassing the typical and outdated message of ‘eat less and move more,’ which we know is incorrect. This simplistic formula doesn’t help many patients resolve their issues like fatty liver, diabetes, and other metabolic disorders,” he concluded.
 

Active Breaks

Other topics debated during the congress included the importance of making exercise prescription a de facto reality in clinical practice and the challenge of achieving therapeutic compliance.

According to experts, one of the well-positioned trends in this regard is the concept of “active breaks” or “exercise snacks.” These breaks involve engaging in short-duration, moderate- to high-intensity activities throughout the day or working hours.

César Bustos, a board member of the Spanish Society of Obesity, mentioned that several studies have demonstrated that simple activities like climbing three flights of stairs or engaging in 1-minute training sessions can increase the metabolic equivalent of cardiovascular capacity and cardiorespiratory fitness. This approach could help reduce cardiovascular disease risk and all-cause mortality by 13%-15%.

“Cardiorespiratory fitness is the ability to engage in physical activity. It has been proven to be a more powerful predictor of mortality risk than traditional risk factors such as hypertension, smoking, obesity, hyperlipidemia, and type 2 diabetes,” said Mr. Bustos.

The expert added that these findings on the benefits of exercise snacks are particularly relevant in the current context, where lack of time is the primary obstacle cited by individuals with obesity for not engaging in regular physical activity. In addition, exercise prescription is considered the primary preventive measure for obesity and its associated diseases.

“Exercise is an essential complement to various treatments and strategies aimed at managing obesity and maintaining long-term weight reductions. However, patient compliance with recommended measures to stay active remains low. This deficiency can be overcome with the adoption of exercise snacks or small doses of exercise, which have become the most effective tool for achieving this goal,” he emphasized.

Also, in line with other experts, Mr. Bustos emphasized the importance of combined strength and cardiovascular training within the same session. “Undoubtedly, this is the most effective modality, as recent meta-analyses reflect. There is also a second effective modality for improving cardiometabolic parameters in patients with obesity: Hybrid training, including games, skipping ropes, and various devices.”
 

Exerkines and Poly Pills

Antonio García-Hermoso, PhD, a specialist in physical activity and sports at Navarrabiomed, University Hospital of Navarra in Pamplona, Spain, provided an update on the latest evidence regarding exerkines, which are molecules released during exercise. Research into these molecules attempts to analyze and understand the complex network of interactions between various exercise response systems.

Dr. García-Hermoso said that in the case of obesity and type 2 diabetes, research focuses on how exercise can affect patients’ exerkine levels and how these molecules can affect cardiometabolic control.

“The results demonstrate that these molecules are associated with multiple benefits, including improved insulin sensitivity and glucose homeostasis,” said Dr. García-Hermoso. “Concerning obesity, regular exercise has been shown to reduce interleukin-6 levels, positively affecting inflammation in these patients, also being associated with increased lipolysis and fatty acid utilization.”

Dr. García-Hermoso considered that studying exerkines supports the importance of individualized exercise prescription, like prescription of diet or medications.

He emphasized the importance of intensity, “which is even more crucial than the type of physical activity. Intense exercise activates physiological mechanisms, such as increased blood lactate levels, favoring the inhibition of ghrelin signaling associated with appetite. Therefore, higher exercise intensity leads to more lactate and greater inhibition of post-training hunger.”

“It is essential to understand that exercise is a poly pill with many advantages, and one of them is that even in small amounts, if intensity is increased, health benefits increase considerably,” Dr. García-Hermoso concluded.

Dr. Butragueño, Mr. Bustos, and Dr. García-Hermoso declared no relevant economic conflicts of interest.

This article was translated from the Medscape Spanish edition. A version of this article appeared on Medscape.com.

TOPLINE:

Dupilumab improved the signs and symptoms and quality of life in adults and adolescents with moderate to severe atopic hand and foot dermatitis compared with placebo.

METHODOLOGY:

• The multinational phase 3 LIBERTY-AD-HAFT trial of adults and adolescents with moderate to severe chronic atopic dermatitis (AD) of the hands, feet, or both included 67 participants at 48 sites randomized to dupilumab monotherapy and 66 to placebo.
• The primary endpoint was the proportion of patients scoring 0 or 1 on Hand and Foot Investigator’s Global Assessment (HF-IGA) at week 16.
• Secondary endpoints were severity and extent of signs, symptom intensity (itch and pain), sleep, and quality of life.

TAKEAWAY:

• At week 16, 27 patients receiving dupilumab vs 11 receiving placebo achieved an HF-IGA score of 0 or 1 (40.3% vs 16.7%; P = .003).
• At week 16, 35 participants receiving dupilumab vs nine receiving placebo improved at least four points in the weekly average of daily HF-Peak Pruritus Numeric Rating Scale (52.2% vs 13.6%; P < .0001).
• At week 16, Quality of Life Hand Eczema Questionnaire results improved in the dupilumab group compared with controls (P < .0001), and weekly average of daily Sleep Numeric Rating Scale results improved in the dupilumab group compared with controls (P < .05).
• The safety profile was similar to the known profile in adults and adolescents with moderate to severe AD.

IN PRACTICE:

The results of the study “support dupilumab” as an “efficacious systemic therapy for moderate to severe H/F AD,” the authors wrote.

SOURCE:

The study, led by Eric L. Simpson, MD, MCR, professor of dermatology at the Oregon Health & Science University in Portland, was published on January 29, 2024, in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The short duration of the study and the large proportion of patients with positive patch tests (31 of 133) suggested that some participants may have had concurrent AD and allergic contact dermatitis, so the effect of dupilumab on those patients needs further evaluation.

DISCLOSURES:

The study was sponsored by Sanofi and Regeneron. All but one author had financial relationships with Sanofi, Regeneron, or both. Several authors were employees of, and may hold stocks or stock options in, Sanofi or Regeneron.

TOPLINE:

Dupilumab improved the signs and symptoms and quality of life in adults and adolescents with moderate to severe atopic hand and foot dermatitis compared with placebo.

METHODOLOGY:

• The multinational phase 3 LIBERTY-AD-HAFT trial of adults and adolescents with moderate to severe chronic atopic dermatitis (AD) of the hands, feet, or both included 67 participants at 48 sites randomized to dupilumab monotherapy and 66 to placebo.
• The primary endpoint was the proportion of patients scoring 0 or 1 on Hand and Foot Investigator’s Global Assessment (HF-IGA) at week 16.
• Secondary endpoints were severity and extent of signs, symptom intensity (itch and pain), sleep, and quality of life.

TAKEAWAY:

• At week 16, 27 patients receiving dupilumab vs 11 receiving placebo achieved an HF-IGA score of 0 or 1 (40.3% vs 16.7%; P = .003).
• At week 16, 35 participants receiving dupilumab vs nine receiving placebo improved at least four points in the weekly average of daily HF-Peak Pruritus Numeric Rating Scale (52.2% vs 13.6%; P < .0001).
• At week 16, Quality of Life Hand Eczema Questionnaire results improved in the dupilumab group compared with controls (P < .0001), and weekly average of daily Sleep Numeric Rating Scale results improved in the dupilumab group compared with controls (P < .05).
• The safety profile was similar to the known profile in adults and adolescents with moderate to severe AD.

IN PRACTICE:

The results of the study “support dupilumab” as an “efficacious systemic therapy for moderate to severe H/F AD,” the authors wrote.

SOURCE:

The study, led by Eric L. Simpson, MD, MCR, professor of dermatology at the Oregon Health & Science University in Portland, was published on January 29, 2024, in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The short duration of the study and the large proportion of patients with positive patch tests (31 of 133) suggested that some participants may have had concurrent AD and allergic contact dermatitis, so the effect of dupilumab on those patients needs further evaluation.

DISCLOSURES:

The study was sponsored by Sanofi and Regeneron. All but one author had financial relationships with Sanofi, Regeneron, or both. Several authors were employees of, and may hold stocks or stock options in, Sanofi or Regeneron.

TOPLINE:

Dupilumab improved the signs and symptoms and quality of life in adults and adolescents with moderate to severe atopic hand and foot dermatitis compared with placebo.

METHODOLOGY:

• The multinational phase 3 LIBERTY-AD-HAFT trial of adults and adolescents with moderate to severe chronic atopic dermatitis (AD) of the hands, feet, or both included 67 participants at 48 sites randomized to dupilumab monotherapy and 66 to placebo.
• The primary endpoint was the proportion of patients scoring 0 or 1 on Hand and Foot Investigator’s Global Assessment (HF-IGA) at week 16.
• Secondary endpoints were severity and extent of signs, symptom intensity (itch and pain), sleep, and quality of life.

TAKEAWAY:

• At week 16, 27 patients receiving dupilumab vs 11 receiving placebo achieved an HF-IGA score of 0 or 1 (40.3% vs 16.7%; P = .003).
• At week 16, 35 participants receiving dupilumab vs nine receiving placebo improved at least four points in the weekly average of daily HF-Peak Pruritus Numeric Rating Scale (52.2% vs 13.6%; P < .0001).
• At week 16, Quality of Life Hand Eczema Questionnaire results improved in the dupilumab group compared with controls (P < .0001), and weekly average of daily Sleep Numeric Rating Scale results improved in the dupilumab group compared with controls (P < .05).
• The safety profile was similar to the known profile in adults and adolescents with moderate to severe AD.

IN PRACTICE:

The results of the study “support dupilumab” as an “efficacious systemic therapy for moderate to severe H/F AD,” the authors wrote.

SOURCE:

The study, led by Eric L. Simpson, MD, MCR, professor of dermatology at the Oregon Health & Science University in Portland, was published on January 29, 2024, in the Journal of the American Academy of Dermatology.

LIMITATIONS:

The short duration of the study and the large proportion of patients with positive patch tests (31 of 133) suggested that some participants may have had concurrent AD and allergic contact dermatitis, so the effect of dupilumab on those patients needs further evaluation.

DISCLOSURES:

The study was sponsored by Sanofi and Regeneron. All but one author had financial relationships with Sanofi, Regeneron, or both. Several authors were employees of, and may hold stocks or stock options in, Sanofi or Regeneron.

Testosterone replacement therapy in the treatment of hypogonadism showed no benefit in slowing the progression of prediabetes or diabetes, contrary to previous evidence that suggested potential improvements in insulin sensitivity and metabolism.

“The findings of this study suggest that testosterone replacement therapy alone should not be used as a therapeutic intervention to prevent or treat diabetes in men with hypogonadism,” reported the authors of research published this month in JAMA Internal Medicine.

The suggestion that testosterone replacement could prevent or slow diabetes stems from numerous studies linking testosterone deficiency to a host of adverse effects that include increases in insulin resistance and an increased risk for prediabetes and type 2 diabetes.

Furthermore, one recent uncontrolled study showed a lower rate of progression from prediabetes to diabetes in testosterone-treated vs untreated men with hypogonadism.

But with no known randomized clinical trials evaluating the effects of testosterone on diabetes in the absence of a concurrent lifestyle intervention, Shalender Bhasin, MB, of the Research Program in Men’s Health: Aging and Metabolism, at Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues conducted a substudy of the randomized TRAVERSE trial, which was conducted at 316 sites in the United States.

“We hypothesized that testosterone replacement therapy for men with hypogonadism and prediabetes would be associated with a significantly lower rate of progression to diabetes,” they wrote.

In the study, named the TRAVERSE Diabetes Study, 5204 participants aged between 40 and 85 years with hypogonadism as well as prediabetes (n = 1175) or diabetes (n = 3880) were randomized 1:1 to receive treatment either with 1.62% testosterone gel or placebo gel.

The participants had a mean age of 63.2 years, and the mean A1c among those with prediabetes was 5.8%.

For the primary outcome, the risk for progression to diabetes did not differ significantly between the testosterone-treated and placebo groups at 6 months (0.7% vs 1.4%), 12 months (7.8% vs 10.7%), 24 months (10.1% vs 14.6%), 36 months (12.8% vs 15.8%), or 48 months (13.4% vs 15.7%; omnibus test P = .49).

There were also no significant differences in terms of glycemic remission and the changes in glucose and A1c levels between the testosterone- and placebo-treated men with prediabetes or diabetes, consistent with findings from previous smaller trials.

The authors pointed out that the participants in the TRAVERSE trial had mild to moderate testosterone deficiency, and “it is possible that greater improvements in insulin sensitivity may be observed in men with severe testosterone deficiency.”

However, they noted that most men with hypogonadism who are treated with testosterone replacement therapy have only mild testosterone deficiency.

The parent TRAVERSE study did show testosterone replacement therapy to be associated with higher incidences of venous thromboembolism, atrial fibrillation, and acute kidney injury; however, no additional between-group differences were observed based on diabetes or prediabetes status.

“The findings of this study do not support the use of testosterone replacement therapy alone to prevent or to treat diabetes in men with hypogonadism,” the authors concluded.
 

Study ‘Overcomes Limitations of Prior Studies’

In an editorial published concurrently with the study, Lona Mody, MD, of the Division of Geriatric and Palliative Care Medicine, University of Michigan Medical School, in Ann Arbor, and colleagues underscored that “the results of this study suggest that testosterone replacement therapy will not benefit glycemic control in men without hypogonadism despite the inappropriately high rates of use in this group.”

Further commenting, Dr. Mody elaborated on the high rates of use, noting that data have shown androgen use among men over 40 years increased more than threefold from 0.81% in 2001 to 2.91% in 2011.

“Based on sales data, testosterone prescribing has increased 100-fold from $18 million in the late 1980s to $1.8 billion over three decades,” Dr. Mody said.

She noted that while some previous research has shown a similar lack of benefits, “the current study overcomes some limitations of prior studies.”

Ultimately, the evidence indicated that “the only major indication for testosterone replacement therapy remains to treat bothersome symptoms of hypogonadism,” Dr. Mody said. “It does not appear to have metabolic benefits.”

This trial was funded by a consortium of testosterone manufacturers led by AbbVie Inc., with additional financial support provided by Endo Pharmaceuticals, Acerus Pharmaceuticals Corporation, and Upsher-Smith Laboratories, LLC.
 

A version of this article appeared on Medscape.com.

Testosterone replacement therapy in the treatment of hypogonadism showed no benefit in slowing the progression of prediabetes or diabetes, contrary to previous evidence that suggested potential improvements in insulin sensitivity and metabolism.

“The findings of this study suggest that testosterone replacement therapy alone should not be used as a therapeutic intervention to prevent or treat diabetes in men with hypogonadism,” reported the authors of research published this month in JAMA Internal Medicine.

The suggestion that testosterone replacement could prevent or slow diabetes stems from numerous studies linking testosterone deficiency to a host of adverse effects that include increases in insulin resistance and an increased risk for prediabetes and type 2 diabetes.

Furthermore, one recent uncontrolled study showed a lower rate of progression from prediabetes to diabetes in testosterone-treated vs untreated men with hypogonadism.

But with no known randomized clinical trials evaluating the effects of testosterone on diabetes in the absence of a concurrent lifestyle intervention, Shalender Bhasin, MB, of the Research Program in Men’s Health: Aging and Metabolism, at Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues conducted a substudy of the randomized TRAVERSE trial, which was conducted at 316 sites in the United States.

“We hypothesized that testosterone replacement therapy for men with hypogonadism and prediabetes would be associated with a significantly lower rate of progression to diabetes,” they wrote.

In the study, named the TRAVERSE Diabetes Study, 5204 participants aged between 40 and 85 years with hypogonadism as well as prediabetes (n = 1175) or diabetes (n = 3880) were randomized 1:1 to receive treatment either with 1.62% testosterone gel or placebo gel.

The participants had a mean age of 63.2 years, and the mean A1c among those with prediabetes was 5.8%.

For the primary outcome, the risk for progression to diabetes did not differ significantly between the testosterone-treated and placebo groups at 6 months (0.7% vs 1.4%), 12 months (7.8% vs 10.7%), 24 months (10.1% vs 14.6%), 36 months (12.8% vs 15.8%), or 48 months (13.4% vs 15.7%; omnibus test P = .49).

There were also no significant differences in terms of glycemic remission and the changes in glucose and A1c levels between the testosterone- and placebo-treated men with prediabetes or diabetes, consistent with findings from previous smaller trials.

The authors pointed out that the participants in the TRAVERSE trial had mild to moderate testosterone deficiency, and “it is possible that greater improvements in insulin sensitivity may be observed in men with severe testosterone deficiency.”

However, they noted that most men with hypogonadism who are treated with testosterone replacement therapy have only mild testosterone deficiency.

The parent TRAVERSE study did show testosterone replacement therapy to be associated with higher incidences of venous thromboembolism, atrial fibrillation, and acute kidney injury; however, no additional between-group differences were observed based on diabetes or prediabetes status.

“The findings of this study do not support the use of testosterone replacement therapy alone to prevent or to treat diabetes in men with hypogonadism,” the authors concluded.
 

Study ‘Overcomes Limitations of Prior Studies’

In an editorial published concurrently with the study, Lona Mody, MD, of the Division of Geriatric and Palliative Care Medicine, University of Michigan Medical School, in Ann Arbor, and colleagues underscored that “the results of this study suggest that testosterone replacement therapy will not benefit glycemic control in men without hypogonadism despite the inappropriately high rates of use in this group.”

Further commenting, Dr. Mody elaborated on the high rates of use, noting that data have shown androgen use among men over 40 years increased more than threefold from 0.81% in 2001 to 2.91% in 2011.

“Based on sales data, testosterone prescribing has increased 100-fold from $18 million in the late 1980s to $1.8 billion over three decades,” Dr. Mody said.

She noted that while some previous research has shown a similar lack of benefits, “the current study overcomes some limitations of prior studies.”

Ultimately, the evidence indicated that “the only major indication for testosterone replacement therapy remains to treat bothersome symptoms of hypogonadism,” Dr. Mody said. “It does not appear to have metabolic benefits.”

This trial was funded by a consortium of testosterone manufacturers led by AbbVie Inc., with additional financial support provided by Endo Pharmaceuticals, Acerus Pharmaceuticals Corporation, and Upsher-Smith Laboratories, LLC.
 

A version of this article appeared on Medscape.com.

Testosterone replacement therapy in the treatment of hypogonadism showed no benefit in slowing the progression of prediabetes or diabetes, contrary to previous evidence that suggested potential improvements in insulin sensitivity and metabolism.

“The findings of this study suggest that testosterone replacement therapy alone should not be used as a therapeutic intervention to prevent or treat diabetes in men with hypogonadism,” reported the authors of research published this month in JAMA Internal Medicine.

The suggestion that testosterone replacement could prevent or slow diabetes stems from numerous studies linking testosterone deficiency to a host of adverse effects that include increases in insulin resistance and an increased risk for prediabetes and type 2 diabetes.

Furthermore, one recent uncontrolled study showed a lower rate of progression from prediabetes to diabetes in testosterone-treated vs untreated men with hypogonadism.

But with no known randomized clinical trials evaluating the effects of testosterone on diabetes in the absence of a concurrent lifestyle intervention, Shalender Bhasin, MB, of the Research Program in Men’s Health: Aging and Metabolism, at Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues conducted a substudy of the randomized TRAVERSE trial, which was conducted at 316 sites in the United States.

“We hypothesized that testosterone replacement therapy for men with hypogonadism and prediabetes would be associated with a significantly lower rate of progression to diabetes,” they wrote.

In the study, named the TRAVERSE Diabetes Study, 5204 participants aged between 40 and 85 years with hypogonadism as well as prediabetes (n = 1175) or diabetes (n = 3880) were randomized 1:1 to receive treatment either with 1.62% testosterone gel or placebo gel.

The participants had a mean age of 63.2 years, and the mean A1c among those with prediabetes was 5.8%.

For the primary outcome, the risk for progression to diabetes did not differ significantly between the testosterone-treated and placebo groups at 6 months (0.7% vs 1.4%), 12 months (7.8% vs 10.7%), 24 months (10.1% vs 14.6%), 36 months (12.8% vs 15.8%), or 48 months (13.4% vs 15.7%; omnibus test P = .49).

There were also no significant differences in terms of glycemic remission and the changes in glucose and A1c levels between the testosterone- and placebo-treated men with prediabetes or diabetes, consistent with findings from previous smaller trials.

The authors pointed out that the participants in the TRAVERSE trial had mild to moderate testosterone deficiency, and “it is possible that greater improvements in insulin sensitivity may be observed in men with severe testosterone deficiency.”

However, they noted that most men with hypogonadism who are treated with testosterone replacement therapy have only mild testosterone deficiency.

The parent TRAVERSE study did show testosterone replacement therapy to be associated with higher incidences of venous thromboembolism, atrial fibrillation, and acute kidney injury; however, no additional between-group differences were observed based on diabetes or prediabetes status.

“The findings of this study do not support the use of testosterone replacement therapy alone to prevent or to treat diabetes in men with hypogonadism,” the authors concluded.
 

Study ‘Overcomes Limitations of Prior Studies’

In an editorial published concurrently with the study, Lona Mody, MD, of the Division of Geriatric and Palliative Care Medicine, University of Michigan Medical School, in Ann Arbor, and colleagues underscored that “the results of this study suggest that testosterone replacement therapy will not benefit glycemic control in men without hypogonadism despite the inappropriately high rates of use in this group.”

Further commenting, Dr. Mody elaborated on the high rates of use, noting that data have shown androgen use among men over 40 years increased more than threefold from 0.81% in 2001 to 2.91% in 2011.

“Based on sales data, testosterone prescribing has increased 100-fold from $18 million in the late 1980s to $1.8 billion over three decades,” Dr. Mody said.

She noted that while some previous research has shown a similar lack of benefits, “the current study overcomes some limitations of prior studies.”

Ultimately, the evidence indicated that “the only major indication for testosterone replacement therapy remains to treat bothersome symptoms of hypogonadism,” Dr. Mody said. “It does not appear to have metabolic benefits.”

This trial was funded by a consortium of testosterone manufacturers led by AbbVie Inc., with additional financial support provided by Endo Pharmaceuticals, Acerus Pharmaceuticals Corporation, and Upsher-Smith Laboratories, LLC.
 

A version of this article appeared on Medscape.com.

Patients with lactose intolerance are usually advised to avoid milk. However, many still consume dairy products despite experiencing gastrointestinal symptoms. Surprisingly, this "unreasonable" strategy may have the benefit of reducing the risk for type 2 diabetes, as shown in a recent American study.

“At first glance, the statement of the study seems counterintuitive,” said Robert Wagner, MD, head of the Clinical Studies Center at the German Diabetes Center-Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany. “However, lactose intolerance has different manifestations.” Less severely affected individuals often consume milk and tolerate discomfort such as bloating or abdominal pain. “It is precisely these individuals that the study clearly shows have a lower incidence of diabetes associated with milk consumption,” said Dr. Wagner.
 

Milk’s Heterogeneous Effect

The effect of milk consumption on diabetes, among other factors, has been repeatedly studied in nutritional studies, with sometimes heterogeneous results in different countries. The reason for this is presumed to be that in Asia, most people — 60%-100% — are lactose intolerant, whereas in Europe, only as much as 40% of the population has lactose intolerance.

The authors, led by Kai Luo, PhD, research fellow in the Department of Epidemiology and Population Health at Albert Einstein College of Medicine in Bronx, New York, did not mention lactose tolerance and intolerance in their paper in Nature Metabolism. Instead, they divided the study population into lactase-persistent and non-lactase-persistent participants.

“Not being lactase-persistent does not necessarily exclude the ability to consume a certain amount of lactose,” said Lonneke Janssen Duijghuijsen, PhD, a nutrition scientist at Wageningen University, Wageningen, the Netherlands. “Studies have shown that many individuals who lack lactase can still consume up to 12 g of lactose per day — equivalent to the amount in a large glass of milk — without experiencing intolerance symptoms.”
 

Gut Microbiome and Metabolites

Dr. Luo and his colleagues analyzed data from 12,653 participants in the Hispanic Community Health Study/Study of Latinos, an ongoing prospective cohort study involving adults with Hispanic backgrounds. It collects detailed information on nutrition and the occurrence of diseases.

The authors examined whether the study participants were lactase-persistent or non-lactase-persistent and how frequently they consumed milk. They also analyzed the gut microbiome and various metabolites in the blood over a median follow-up period of 6 years.

The data analysis showed that higher milk consumption in non-lactase-persistent participants — but not in lactase-persistent participants — is associated with about a 30% reduced risk for type 2 diabetes when socioeconomic, demographic, and behavioral factors are accounted for. Comparable results were obtained by Dr. Luo and his colleagues with data from the UK Biobank, which served as validation.

A higher milk consumption was associated not only with a lower diabetes risk in non-lactase-persistent individuals but also with a lower body mass index. “This could be one of the factors behind the diabetes protection,” said Dr. Wagner. “However, no formal mediation analyses were conducted in the study.”

Dr. Luo’s team primarily attributed the cause of the observed association between milk consumption and diabetes risk to the gut. Increased milk intake was also associated with changes in the gut microbiome. For example, there was an enrichment of Bifidobacterium, while Prevotella decreased. Changes were also observed in the circulating metabolites in the blood, such as an increase in indole-3-propionate and a decrease in branched-chain amino acids.

These metabolites, speculated the authors, could be more intensely produced by milk-associated bacteria and might be causally related to the association between milk consumption and reduced risk for type 2 diabetes in non-lactase-persistent individuals. “The authors have not been able to provide precise evidence of these mediators, but one possible mediator of these effects could be short-chain fatty acids, which can directly or indirectly influence appetite, insulin action, or liver fat beneficially,” said Dr. Wagner.
 

Bacteria in the Colon

For Dr. Janssen Duijghuijsen, the conclusion that milk consumption can influence the composition of the microbiome and thus the metabolic profile, especially in individuals without lactase persistence, is plausible.

“Individuals with lactase persistence efficiently digest lactose and absorb the resulting galactose and glucose molecules in the small intestine. In contrast, in non-lactase-persistent individuals, lactase is not expressed in the brush border of the small intestine. As a result, lactose remains undigested in the colon and can serve as an energy source for gut bacteria. This can influence the composition of the microbiome, which in turn can alter the concentration of circulating metabolites,” she said.

Dr. Janssen Duijghuijsen has investigated the effect of lactose intake on the microbiome. In a recently published study, she also showed that increasing lactose intake by non-lactase-persistent individuals leads to changes in the microbiome, including an increase in Bifidobacteria.

“In line with the current study, we also found a significant increase in fecal beta-galactosidase activity. Given the close relationship between the composition of the gut microbiome and the metabolite profile, it is likely that changes in one can affect the other,” said Dr. Janssen Duijghuijsen.
 

Nutritional Recommendations

The nutrition scientist warned against concluding that milk consumption can protect against type 2 diabetes in non-lactase-persistent individuals, however. “The study suggests a statistical association between milk consumption, certain metabolites, and the frequency of type 2 diabetes. These associations do not provide definitive evidence of a causal relationship,” she said. Any dietary recommendations cannot be derived from the study; much more research is needed for that.

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

Patients with lactose intolerance are usually advised to avoid milk. However, many still consume dairy products despite experiencing gastrointestinal symptoms. Surprisingly, this "unreasonable" strategy may have the benefit of reducing the risk for type 2 diabetes, as shown in a recent American study.

“At first glance, the statement of the study seems counterintuitive,” said Robert Wagner, MD, head of the Clinical Studies Center at the German Diabetes Center-Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany. “However, lactose intolerance has different manifestations.” Less severely affected individuals often consume milk and tolerate discomfort such as bloating or abdominal pain. “It is precisely these individuals that the study clearly shows have a lower incidence of diabetes associated with milk consumption,” said Dr. Wagner.
 

Milk’s Heterogeneous Effect

The effect of milk consumption on diabetes, among other factors, has been repeatedly studied in nutritional studies, with sometimes heterogeneous results in different countries. The reason for this is presumed to be that in Asia, most people — 60%-100% — are lactose intolerant, whereas in Europe, only as much as 40% of the population has lactose intolerance.

The authors, led by Kai Luo, PhD, research fellow in the Department of Epidemiology and Population Health at Albert Einstein College of Medicine in Bronx, New York, did not mention lactose tolerance and intolerance in their paper in Nature Metabolism. Instead, they divided the study population into lactase-persistent and non-lactase-persistent participants.

“Not being lactase-persistent does not necessarily exclude the ability to consume a certain amount of lactose,” said Lonneke Janssen Duijghuijsen, PhD, a nutrition scientist at Wageningen University, Wageningen, the Netherlands. “Studies have shown that many individuals who lack lactase can still consume up to 12 g of lactose per day — equivalent to the amount in a large glass of milk — without experiencing intolerance symptoms.”
 

Gut Microbiome and Metabolites

Dr. Luo and his colleagues analyzed data from 12,653 participants in the Hispanic Community Health Study/Study of Latinos, an ongoing prospective cohort study involving adults with Hispanic backgrounds. It collects detailed information on nutrition and the occurrence of diseases.

The authors examined whether the study participants were lactase-persistent or non-lactase-persistent and how frequently they consumed milk. They also analyzed the gut microbiome and various metabolites in the blood over a median follow-up period of 6 years.

The data analysis showed that higher milk consumption in non-lactase-persistent participants — but not in lactase-persistent participants — is associated with about a 30% reduced risk for type 2 diabetes when socioeconomic, demographic, and behavioral factors are accounted for. Comparable results were obtained by Dr. Luo and his colleagues with data from the UK Biobank, which served as validation.

A higher milk consumption was associated not only with a lower diabetes risk in non-lactase-persistent individuals but also with a lower body mass index. “This could be one of the factors behind the diabetes protection,” said Dr. Wagner. “However, no formal mediation analyses were conducted in the study.”

Dr. Luo’s team primarily attributed the cause of the observed association between milk consumption and diabetes risk to the gut. Increased milk intake was also associated with changes in the gut microbiome. For example, there was an enrichment of Bifidobacterium, while Prevotella decreased. Changes were also observed in the circulating metabolites in the blood, such as an increase in indole-3-propionate and a decrease in branched-chain amino acids.

These metabolites, speculated the authors, could be more intensely produced by milk-associated bacteria and might be causally related to the association between milk consumption and reduced risk for type 2 diabetes in non-lactase-persistent individuals. “The authors have not been able to provide precise evidence of these mediators, but one possible mediator of these effects could be short-chain fatty acids, which can directly or indirectly influence appetite, insulin action, or liver fat beneficially,” said Dr. Wagner.
 

Bacteria in the Colon

For Dr. Janssen Duijghuijsen, the conclusion that milk consumption can influence the composition of the microbiome and thus the metabolic profile, especially in individuals without lactase persistence, is plausible.

“Individuals with lactase persistence efficiently digest lactose and absorb the resulting galactose and glucose molecules in the small intestine. In contrast, in non-lactase-persistent individuals, lactase is not expressed in the brush border of the small intestine. As a result, lactose remains undigested in the colon and can serve as an energy source for gut bacteria. This can influence the composition of the microbiome, which in turn can alter the concentration of circulating metabolites,” she said.

Dr. Janssen Duijghuijsen has investigated the effect of lactose intake on the microbiome. In a recently published study, she also showed that increasing lactose intake by non-lactase-persistent individuals leads to changes in the microbiome, including an increase in Bifidobacteria.

“In line with the current study, we also found a significant increase in fecal beta-galactosidase activity. Given the close relationship between the composition of the gut microbiome and the metabolite profile, it is likely that changes in one can affect the other,” said Dr. Janssen Duijghuijsen.
 

Nutritional Recommendations

The nutrition scientist warned against concluding that milk consumption can protect against type 2 diabetes in non-lactase-persistent individuals, however. “The study suggests a statistical association between milk consumption, certain metabolites, and the frequency of type 2 diabetes. These associations do not provide definitive evidence of a causal relationship,” she said. Any dietary recommendations cannot be derived from the study; much more research is needed for that.

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

Patients with lactose intolerance are usually advised to avoid milk. However, many still consume dairy products despite experiencing gastrointestinal symptoms. Surprisingly, this "unreasonable" strategy may have the benefit of reducing the risk for type 2 diabetes, as shown in a recent American study.

“At first glance, the statement of the study seems counterintuitive,” said Robert Wagner, MD, head of the Clinical Studies Center at the German Diabetes Center-Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany. “However, lactose intolerance has different manifestations.” Less severely affected individuals often consume milk and tolerate discomfort such as bloating or abdominal pain. “It is precisely these individuals that the study clearly shows have a lower incidence of diabetes associated with milk consumption,” said Dr. Wagner.
 

Milk’s Heterogeneous Effect

The effect of milk consumption on diabetes, among other factors, has been repeatedly studied in nutritional studies, with sometimes heterogeneous results in different countries. The reason for this is presumed to be that in Asia, most people — 60%-100% — are lactose intolerant, whereas in Europe, only as much as 40% of the population has lactose intolerance.

The authors, led by Kai Luo, PhD, research fellow in the Department of Epidemiology and Population Health at Albert Einstein College of Medicine in Bronx, New York, did not mention lactose tolerance and intolerance in their paper in Nature Metabolism. Instead, they divided the study population into lactase-persistent and non-lactase-persistent participants.

“Not being lactase-persistent does not necessarily exclude the ability to consume a certain amount of lactose,” said Lonneke Janssen Duijghuijsen, PhD, a nutrition scientist at Wageningen University, Wageningen, the Netherlands. “Studies have shown that many individuals who lack lactase can still consume up to 12 g of lactose per day — equivalent to the amount in a large glass of milk — without experiencing intolerance symptoms.”
 

Gut Microbiome and Metabolites

Dr. Luo and his colleagues analyzed data from 12,653 participants in the Hispanic Community Health Study/Study of Latinos, an ongoing prospective cohort study involving adults with Hispanic backgrounds. It collects detailed information on nutrition and the occurrence of diseases.

The authors examined whether the study participants were lactase-persistent or non-lactase-persistent and how frequently they consumed milk. They also analyzed the gut microbiome and various metabolites in the blood over a median follow-up period of 6 years.

The data analysis showed that higher milk consumption in non-lactase-persistent participants — but not in lactase-persistent participants — is associated with about a 30% reduced risk for type 2 diabetes when socioeconomic, demographic, and behavioral factors are accounted for. Comparable results were obtained by Dr. Luo and his colleagues with data from the UK Biobank, which served as validation.

A higher milk consumption was associated not only with a lower diabetes risk in non-lactase-persistent individuals but also with a lower body mass index. “This could be one of the factors behind the diabetes protection,” said Dr. Wagner. “However, no formal mediation analyses were conducted in the study.”

Dr. Luo’s team primarily attributed the cause of the observed association between milk consumption and diabetes risk to the gut. Increased milk intake was also associated with changes in the gut microbiome. For example, there was an enrichment of Bifidobacterium, while Prevotella decreased. Changes were also observed in the circulating metabolites in the blood, such as an increase in indole-3-propionate and a decrease in branched-chain amino acids.

These metabolites, speculated the authors, could be more intensely produced by milk-associated bacteria and might be causally related to the association between milk consumption and reduced risk for type 2 diabetes in non-lactase-persistent individuals. “The authors have not been able to provide precise evidence of these mediators, but one possible mediator of these effects could be short-chain fatty acids, which can directly or indirectly influence appetite, insulin action, or liver fat beneficially,” said Dr. Wagner.
 

Bacteria in the Colon

For Dr. Janssen Duijghuijsen, the conclusion that milk consumption can influence the composition of the microbiome and thus the metabolic profile, especially in individuals without lactase persistence, is plausible.

“Individuals with lactase persistence efficiently digest lactose and absorb the resulting galactose and glucose molecules in the small intestine. In contrast, in non-lactase-persistent individuals, lactase is not expressed in the brush border of the small intestine. As a result, lactose remains undigested in the colon and can serve as an energy source for gut bacteria. This can influence the composition of the microbiome, which in turn can alter the concentration of circulating metabolites,” she said.

Dr. Janssen Duijghuijsen has investigated the effect of lactose intake on the microbiome. In a recently published study, she also showed that increasing lactose intake by non-lactase-persistent individuals leads to changes in the microbiome, including an increase in Bifidobacteria.

“In line with the current study, we also found a significant increase in fecal beta-galactosidase activity. Given the close relationship between the composition of the gut microbiome and the metabolite profile, it is likely that changes in one can affect the other,” said Dr. Janssen Duijghuijsen.
 

Nutritional Recommendations

The nutrition scientist warned against concluding that milk consumption can protect against type 2 diabetes in non-lactase-persistent individuals, however. “The study suggests a statistical association between milk consumption, certain metabolites, and the frequency of type 2 diabetes. These associations do not provide definitive evidence of a causal relationship,” she said. Any dietary recommendations cannot be derived from the study; much more research is needed for that.

This story was translated from the Medscape German edition using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article appeared on Medscape.com.

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

Brain fog is one of the most common, persistent complaints in patients with long COVID. It affects as many as 46% of patients who also deal with other cognitive concerns like memory loss and difficulty concentrating. 

Now, researchers believe they know why. A new study has found that these symptoms may be the result of a viral-borne brain injury that may cause cognitive and mental health issues that persist for years.

Researchers found that 351 patients hospitalized with severe COVID-19 had evidence of a long-term brain injury a year after contracting the SARS-CoV-2 virus. The findings were based on a series of cognitive tests, self-reported symptoms, brain scans, and biomarkers.
 

Brain Deficits Equal to 20 Years of Brain Aging

As part of the preprint study, participants took a cognition test with their scores age-matched to those who had not suffered a serious bout of COVID-19. Then a blood sample was taken to look for specific biomarkers, showing that elevated levels of certain biomarkers were consistent with a brain injury. Using brain scans, researchers also found that certain regions of the brain associated with attention were reduced in volume.

Patients who participated in the study were “less accurate and slower” in their cognition, and suffered from at least one mental health condition, such as depression, anxiety, or posttraumatic stress disorder, according to researchers.

The brain deficits found in COVID-19 patients were equivalent to 20 years of brain aging and provided proof of what doctors have feared: that this virus can damage the brain and result in ongoing mental health issues.

“We found global deficits across cognition,” said lead study author Benedict Michael, PhD, director of the Infection Neuroscience Lab at the University of Liverpool in Liverpool, England. “The cognitive and memory problems that patients complained of were associated with neuroanatomical changes to the brain.”
 

Proof That Symptoms Aren’t ‘Figment’ of Patients’ Imaginations

Cognitive deficits were common among all patients, but the researchers said they don’t yet know whether the brain damage causes permanent cognitive decline. But the research provides patients who have been overlooked by some clinicians with proof that their conditions aren’t a figment of their imaginations, said Karla L. Thompson, PhD, lead neuropsychologist at the University of North Carolina School of Medicine’s COVID Recovery Clinic. 

“Even though we’re several years into this pandemic, there are still a lot of providers who don’t believe that their patients are experiencing these residual symptoms,” said Dr. Thompson, “That’s why the use of biomarkers is important, because it provides an objective indication that the brain has been compromised in some way.”

Some patients with long COVID have said that getting their doctors to believe they have a physical ailment has been a persistent problem throughout the pandemic and especially as it relates to the sometimes-vague collection of symptoms associated with brain fog. One study found that as many as 79% of study respondents reported negative interactions with their healthcare providers when they sought treatment for their long-COVID symptoms.
 

How Do COVID-Related Brain Injuries Happen?

Researchers are unsure what’s causing these brain injuries, though they have identified some clues. Previous research has suggested that such injuries might be the result of a lack of oxygen to the brain, especially in patients who were hospitalized, like those in this study, and were put on ventilators.

Brain scans have previously shown atrophy to the brain›s gray matter in COVID-19 patients, likely caused by inflammation from a heightened immune response rather than the virus itself. This inflammatory response seems to affect the central nervous system. As part of the new study, researchers found some neuroprotective effects of using steroids during hospitalization to reduce brain inflammation.

The results suggest that clinicians should overcome their skepticism and consider the possibility that their patients have suffered a brain injury and should be treated appropriately, said James C. Jackson, PsyD, a neuropsychiatrist at Vanderbilt University School of Medicine. “The old saying is that if it walks like a duck and talks like a duck, it’s a duck,” said Dr. Jackson. 

He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns.
 

A New Path Forward

Treating long-COVID brain fog like a brain injury can help patients get back to some semblance of normalcy, researchers said. “What we’re seeing in terms of brain injury biomarkers and differences in brain scans correlates to real-life problems that these patients are dealing with on a daily basis,” said Dr. Jackson. These include problems at work and in life with multitasking, remembering details, meeting deadlines, synthesizing large amounts of information, and maintaining focus on the task at hand, he said.

There’s also a fear that even with treatment, the aging of the brain caused by the virus might have long-term repercussions and that this enduring injury may cause the early onset of dementia and Alzheimer’s disease in those who were already vulnerable to it. One study, from the National Institute of Neurological Disorders and Stroke (NINDS), found that in those infected with COVID-19 who already had dementia, the virus “rapidly accelerated structural and functional brain deterioration.” 

“We already know the role that neuroinflammation plays in the brains of patients with Alzheimer’s disease,” said Dr. Thompson. “If long COVID is involved in prolonged inflammation of the brain, it goes a long way in explaining the mechanism underlying [the study’s reported] brain aging.”
 

Still More to Learn

In some ways, this study raises nearly as many questions as it does answers. While it provides concrete evidence around the damage the virus is doing to the brains of patients who contracted severe COVID-19, researchers don’t know about the impact on those who had less serious cases of the virus. 

For Ziyad Al-Aly, MD, chief of research and development at the Veterans Affairs St. Louis Health Care System, the concern is that some long-COVID patients may be suffering from cognitive deficits that are more subtle but still impacting their daily lives, and that they’re not getting the help they need. 

What’s more, said Dr. Al-Aly, it’s unclear whether the impacts of the brain damage are permanent or how to stop them from worsening. Researchers and clinicians need a better understanding of the mechanism that allows this virus to enter the brain and do structural damage. If it’s inflammation, will anti-inflammatory or antiviral medications work at preventing it? Will steroids help to offset the damage? “It’s critical we find some answers,” he said.

“SARS-CoV-2 isn’t going anywhere. It will continue to infect the population, so if this is indeed a virus that damages the brain in the long term or permanently, we need to figure out what can be done to stop it,” said Dr. Al-Aly.

A version of this article appeared on Medscape.com.

TOPLINE:

A diagnosis of type 2 diabetes (T2D) at a younger age is associated with an increased cancer risk, while the risk drops for T2D diagnosed at age 75 and older.

METHODOLOGY:

• A T2D diagnosis at a younger age is associated with a greater risk for complications and comorbidities, such as cardiovascular and kidney diseases, retinopathy, and dementia than that occurring at an older age.
• The study evaluated the association between the age at T2D diagnosis and subsequent risk for overall and 14 site-specific cancers in a Shanghai, China, cohort of 428,568 patients newly diagnosed with T2D (about half women) from 2011 to 2018.
• New cases of cancer from the T2D diagnosis to 2018 were identified through a tumor registry.
• Patients were categorized into six groups based on their age at T2D diagnosis: 20-54, 55-59, 60-64, 65-69, 70-74, and ≥ 75 years.
• The incidence rates of overall and 14 site-specific cancers were compared between patients with T2D and the general Shanghai population (older than 20 years).

TAKEAWAY:

• Compared to the general population, T2D increased the relative risk for all-cause cancer by 10% (standardized incidence ratios [SIRs], 1.10; 95% CI, 1.09-1.12).
• Compared with the general population, the overall cancer incidence risk (SIR) was higher among those diagnosed with T2D at a younger age:
• 20-54 years: 1.48 (95% CI, 1.41-1.54)
• 55-59 years: 1.30 (95% CI, 1.25-1.35)
• 60-64 years: 1.19 (95% CI, 1.15-1.23)
• 65-69 years: 1.16 (95% CI, 1.12-1.20)
• 70-74 years: 1.06 (95% CI, 1.02-1.10)
• The overall cancer incidence risk in patients diagnosed with T2D at age ≥ 75 years was even lower than that in the general population (SIR, 0.86; 95% CI, 0.84-0.89).
• The risk (SIR) for most site-specific cancers (including respiratory, colorectal, stomach, liver, pancreatic, bladder, central nervous system, kidney, and gallbladder cancers and lymphoma) decreased with increasing age at T2D diagnosis.

IN PRACTICE:

“Our findings suggest that the carcinogenicity of T2D differs markedly by age at diagnosis and highlights the necessity of stratifying patients according to diagnosis age in management, screening, and preventative strategies,” wrote the authors.

SOURCE:

The study, led by Yanyun Li, Division of Chronic Non-Communicable Disease and Injury, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China, was published online in Diabetes Care.

LIMITATIONS:

Data on smoking history, alcohol consumption, and physical activity were available for nearly 60% of patients with T2D. The findings might only apply to patients with T2D who survive longer than the average and are therefore less applicable to the general population with diabetes. Patients with young-onset T2D had not reached the age where cancers are more prevalent despite as many as 8 years of follow-up.

DISCLOSURES:

This work was supported by the Foundation of National Facility for Translational Medicine, National Natural Science Foundation of China, Shanghai Municipal Health Commission, and Three-Year Action Plan of Shanghai Public Health. The authors declared no conflicts of interest.

A version of this article appeared on Medscape.com.

TOPLINE:

A diagnosis of type 2 diabetes (T2D) at a younger age is associated with an increased cancer risk, while the risk drops for T2D diagnosed at age 75 and older.

METHODOLOGY:

• A T2D diagnosis at a younger age is associated with a greater risk for complications and comorbidities, such as cardiovascular and kidney diseases, retinopathy, and dementia than that occurring at an older age.
• The study evaluated the association between the age at T2D diagnosis and subsequent risk for overall and 14 site-specific cancers in a Shanghai, China, cohort of 428,568 patients newly diagnosed with T2D (about half women) from 2011 to 2018.
• New cases of cancer from the T2D diagnosis to 2018 were identified through a tumor registry.
• Patients were categorized into six groups based on their age at T2D diagnosis: 20-54, 55-59, 60-64, 65-69, 70-74, and ≥ 75 years.
• The incidence rates of overall and 14 site-specific cancers were compared between patients with T2D and the general Shanghai population (older than 20 years).

TAKEAWAY:

• Compared to the general population, T2D increased the relative risk for all-cause cancer by 10% (standardized incidence ratios [SIRs], 1.10; 95% CI, 1.09-1.12).
• Compared with the general population, the overall cancer incidence risk (SIR) was higher among those diagnosed with T2D at a younger age:
• 20-54 years: 1.48 (95% CI, 1.41-1.54)
• 55-59 years: 1.30 (95% CI, 1.25-1.35)
• 60-64 years: 1.19 (95% CI, 1.15-1.23)
• 65-69 years: 1.16 (95% CI, 1.12-1.20)
• 70-74 years: 1.06 (95% CI, 1.02-1.10)
• The overall cancer incidence risk in patients diagnosed with T2D at age ≥ 75 years was even lower than that in the general population (SIR, 0.86; 95% CI, 0.84-0.89).
• The risk (SIR) for most site-specific cancers (including respiratory, colorectal, stomach, liver, pancreatic, bladder, central nervous system, kidney, and gallbladder cancers and lymphoma) decreased with increasing age at T2D diagnosis.

IN PRACTICE:

“Our findings suggest that the carcinogenicity of T2D differs markedly by age at diagnosis and highlights the necessity of stratifying patients according to diagnosis age in management, screening, and preventative strategies,” wrote the authors.

SOURCE:

The study, led by Yanyun Li, Division of Chronic Non-Communicable Disease and Injury, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China, was published online in Diabetes Care.

LIMITATIONS:

Data on smoking history, alcohol consumption, and physical activity were available for nearly 60% of patients with T2D. The findings might only apply to patients with T2D who survive longer than the average and are therefore less applicable to the general population with diabetes. Patients with young-onset T2D had not reached the age where cancers are more prevalent despite as many as 8 years of follow-up.

DISCLOSURES:

This work was supported by the Foundation of National Facility for Translational Medicine, National Natural Science Foundation of China, Shanghai Municipal Health Commission, and Three-Year Action Plan of Shanghai Public Health. The authors declared no conflicts of interest.

A version of this article appeared on Medscape.com.

TOPLINE:

A diagnosis of type 2 diabetes (T2D) at a younger age is associated with an increased cancer risk, while the risk drops for T2D diagnosed at age 75 and older.

METHODOLOGY:

• A T2D diagnosis at a younger age is associated with a greater risk for complications and comorbidities, such as cardiovascular and kidney diseases, retinopathy, and dementia than that occurring at an older age.
• The study evaluated the association between the age at T2D diagnosis and subsequent risk for overall and 14 site-specific cancers in a Shanghai, China, cohort of 428,568 patients newly diagnosed with T2D (about half women) from 2011 to 2018.
• New cases of cancer from the T2D diagnosis to 2018 were identified through a tumor registry.
• Patients were categorized into six groups based on their age at T2D diagnosis: 20-54, 55-59, 60-64, 65-69, 70-74, and ≥ 75 years.
• The incidence rates of overall and 14 site-specific cancers were compared between patients with T2D and the general Shanghai population (older than 20 years).

TAKEAWAY:

• Compared to the general population, T2D increased the relative risk for all-cause cancer by 10% (standardized incidence ratios [SIRs], 1.10; 95% CI, 1.09-1.12).
• Compared with the general population, the overall cancer incidence risk (SIR) was higher among those diagnosed with T2D at a younger age:
• 20-54 years: 1.48 (95% CI, 1.41-1.54)
• 55-59 years: 1.30 (95% CI, 1.25-1.35)
• 60-64 years: 1.19 (95% CI, 1.15-1.23)
• 65-69 years: 1.16 (95% CI, 1.12-1.20)
• 70-74 years: 1.06 (95% CI, 1.02-1.10)
• The overall cancer incidence risk in patients diagnosed with T2D at age ≥ 75 years was even lower than that in the general population (SIR, 0.86; 95% CI, 0.84-0.89).
• The risk (SIR) for most site-specific cancers (including respiratory, colorectal, stomach, liver, pancreatic, bladder, central nervous system, kidney, and gallbladder cancers and lymphoma) decreased with increasing age at T2D diagnosis.

IN PRACTICE:

“Our findings suggest that the carcinogenicity of T2D differs markedly by age at diagnosis and highlights the necessity of stratifying patients according to diagnosis age in management, screening, and preventative strategies,” wrote the authors.

SOURCE:

The study, led by Yanyun Li, Division of Chronic Non-Communicable Disease and Injury, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China, was published online in Diabetes Care.

LIMITATIONS:

Data on smoking history, alcohol consumption, and physical activity were available for nearly 60% of patients with T2D. The findings might only apply to patients with T2D who survive longer than the average and are therefore less applicable to the general population with diabetes. Patients with young-onset T2D had not reached the age where cancers are more prevalent despite as many as 8 years of follow-up.

DISCLOSURES:

This work was supported by the Foundation of National Facility for Translational Medicine, National Natural Science Foundation of China, Shanghai Municipal Health Commission, and Three-Year Action Plan of Shanghai Public Health. The authors declared no conflicts of interest.

A version of this article appeared on Medscape.com.

TOPLINE:

Adolescents with severe obesity who undergo bariatric surgery may have a continuing need for mental health treatment and an increased risk for alcohol use disorder after the procedure.

METHODOLOGY:

• Researchers evaluated the long-term effects of bariatric surgery on the mental health of 1554 adolescents (75% women) with severe obesity who underwent bariatric surgery in Sweden between 2007 and 2017.
• At the time of surgery, the mean age was 19.0 years, and the mean body mass index was 43.7.
• A general population reference group of 15,540 adolescents was created by matching 10 comparators each to adolescents in the surgery group by age, sex, and country of residence.
• Information on psychiatric healthcare use and filled psychiatric drug prescriptions for 5 years before surgery and the first 10 years after surgery were obtained from national registers.
• The number of visits for self-harm and substance use disorder and the number of filled prescriptions for any psychiatric drug, antidepressants, and anxiolytics were other outcomes of interest.

TAKEAWAY:

• At 5 years before surgery, the prevalence of psychiatric healthcare visits (prevalence difference [Δ], 3.7%) and of psychiatric drug use (Δ, 6.2%) was higher in the surgery vs reference group.
• The preoperative trajectories continued and grew post-surgery, with the differences in psychiatric healthcare visits (Δ, ~12%) and psychiatric drug use (Δ, 20.4%) between the groups peaking at 9 and 10 years post surgery, respectively.
• A low prevalence of healthcare visits for substance use disorder in both groups grew to about 5% of adolescents in the surgery group after 10 years, driven primarily by alcohol use, compared with about 1% of adolescents in the reference group (Δ, 4.3%).
• Surgery is an obesity treatment, leading to sustainable weight loss, cardiometabolic health, and physical quality of life, but mental health improvements cannot be expected at the group level.

IN PRACTICE:

“Adolescent patients should be informed of the increased risk for alcohol use disorder and that they might continue needing mental health treatment,” the authors wrote.

SOURCE:

Gustaf Bruze, PhD, from the Department of Medicine, Clinical Epidemiology Division, Karolinska Institutet, Solna, and Kajsa Jarvholm, PhD, from the Department of Psychology, Lund University, Lund, Sweden, led this study, which was published online in The Lancet Child & Adolescent Health.

LIMITATIONS:

The findings may have limited generalizability to other settings, as the study was performed in Sweden with a predominantly White population undergoing Roux-en-Y gastric bypass in a universally accessible healthcare system. Moreover, there was a shortage of nonsurgically treated adolescents with severe obesity for comparison. Patients undergoing surgery may have easier access to healthcare than the general population, which could account for an increase in healthcare visits.

DISCLOSURES:

This study was supported by the Swedish Research Council and the Swedish Research Council for Health, Working Life, and Welfare. Two authors were the current or previous director of the Scandinavian Obesity Surgery Registry. Several authors declared receiving personal fees, participating in advisory boards and educational activities, and having other ties with Ethicon Johnson & Johnson, and Novo Nordisk.

A version of this article appeared on Medscape.com.

TOPLINE:

Adolescents with severe obesity who undergo bariatric surgery may have a continuing need for mental health treatment and an increased risk for alcohol use disorder after the procedure.

METHODOLOGY:

• Researchers evaluated the long-term effects of bariatric surgery on the mental health of 1554 adolescents (75% women) with severe obesity who underwent bariatric surgery in Sweden between 2007 and 2017.
• At the time of surgery, the mean age was 19.0 years, and the mean body mass index was 43.7.
• A general population reference group of 15,540 adolescents was created by matching 10 comparators each to adolescents in the surgery group by age, sex, and country of residence.
• Information on psychiatric healthcare use and filled psychiatric drug prescriptions for 5 years before surgery and the first 10 years after surgery were obtained from national registers.
• The number of visits for self-harm and substance use disorder and the number of filled prescriptions for any psychiatric drug, antidepressants, and anxiolytics were other outcomes of interest.

TAKEAWAY:

• At 5 years before surgery, the prevalence of psychiatric healthcare visits (prevalence difference [Δ], 3.7%) and of psychiatric drug use (Δ, 6.2%) was higher in the surgery vs reference group.
• The preoperative trajectories continued and grew post-surgery, with the differences in psychiatric healthcare visits (Δ, ~12%) and psychiatric drug use (Δ, 20.4%) between the groups peaking at 9 and 10 years post surgery, respectively.
• A low prevalence of healthcare visits for substance use disorder in both groups grew to about 5% of adolescents in the surgery group after 10 years, driven primarily by alcohol use, compared with about 1% of adolescents in the reference group (Δ, 4.3%).
• Surgery is an obesity treatment, leading to sustainable weight loss, cardiometabolic health, and physical quality of life, but mental health improvements cannot be expected at the group level.

IN PRACTICE:

“Adolescent patients should be informed of the increased risk for alcohol use disorder and that they might continue needing mental health treatment,” the authors wrote.

SOURCE:

Gustaf Bruze, PhD, from the Department of Medicine, Clinical Epidemiology Division, Karolinska Institutet, Solna, and Kajsa Jarvholm, PhD, from the Department of Psychology, Lund University, Lund, Sweden, led this study, which was published online in The Lancet Child & Adolescent Health.

LIMITATIONS:

The findings may have limited generalizability to other settings, as the study was performed in Sweden with a predominantly White population undergoing Roux-en-Y gastric bypass in a universally accessible healthcare system. Moreover, there was a shortage of nonsurgically treated adolescents with severe obesity for comparison. Patients undergoing surgery may have easier access to healthcare than the general population, which could account for an increase in healthcare visits.

DISCLOSURES:

This study was supported by the Swedish Research Council and the Swedish Research Council for Health, Working Life, and Welfare. Two authors were the current or previous director of the Scandinavian Obesity Surgery Registry. Several authors declared receiving personal fees, participating in advisory boards and educational activities, and having other ties with Ethicon Johnson & Johnson, and Novo Nordisk.

A version of this article appeared on Medscape.com.

TOPLINE:

Adolescents with severe obesity who undergo bariatric surgery may have a continuing need for mental health treatment and an increased risk for alcohol use disorder after the procedure.

METHODOLOGY:

• Researchers evaluated the long-term effects of bariatric surgery on the mental health of 1554 adolescents (75% women) with severe obesity who underwent bariatric surgery in Sweden between 2007 and 2017.
• At the time of surgery, the mean age was 19.0 years, and the mean body mass index was 43.7.
• A general population reference group of 15,540 adolescents was created by matching 10 comparators each to adolescents in the surgery group by age, sex, and country of residence.
• Information on psychiatric healthcare use and filled psychiatric drug prescriptions for 5 years before surgery and the first 10 years after surgery were obtained from national registers.
• The number of visits for self-harm and substance use disorder and the number of filled prescriptions for any psychiatric drug, antidepressants, and anxiolytics were other outcomes of interest.

TAKEAWAY:

• At 5 years before surgery, the prevalence of psychiatric healthcare visits (prevalence difference [Δ], 3.7%) and of psychiatric drug use (Δ, 6.2%) was higher in the surgery vs reference group.
• The preoperative trajectories continued and grew post-surgery, with the differences in psychiatric healthcare visits (Δ, ~12%) and psychiatric drug use (Δ, 20.4%) between the groups peaking at 9 and 10 years post surgery, respectively.
• A low prevalence of healthcare visits for substance use disorder in both groups grew to about 5% of adolescents in the surgery group after 10 years, driven primarily by alcohol use, compared with about 1% of adolescents in the reference group (Δ, 4.3%).
• Surgery is an obesity treatment, leading to sustainable weight loss, cardiometabolic health, and physical quality of life, but mental health improvements cannot be expected at the group level.

IN PRACTICE:

“Adolescent patients should be informed of the increased risk for alcohol use disorder and that they might continue needing mental health treatment,” the authors wrote.

SOURCE:

Gustaf Bruze, PhD, from the Department of Medicine, Clinical Epidemiology Division, Karolinska Institutet, Solna, and Kajsa Jarvholm, PhD, from the Department of Psychology, Lund University, Lund, Sweden, led this study, which was published online in The Lancet Child & Adolescent Health.

LIMITATIONS:

The findings may have limited generalizability to other settings, as the study was performed in Sweden with a predominantly White population undergoing Roux-en-Y gastric bypass in a universally accessible healthcare system. Moreover, there was a shortage of nonsurgically treated adolescents with severe obesity for comparison. Patients undergoing surgery may have easier access to healthcare than the general population, which could account for an increase in healthcare visits.

DISCLOSURES:

This study was supported by the Swedish Research Council and the Swedish Research Council for Health, Working Life, and Welfare. Two authors were the current or previous director of the Scandinavian Obesity Surgery Registry. Several authors declared receiving personal fees, participating in advisory boards and educational activities, and having other ties with Ethicon Johnson & Johnson, and Novo Nordisk.

A version of this article appeared on Medscape.com.

Exposure to even moderate concentrations of radon is associated with a significant increase in stroke risk, new research suggests.

An analysis of radon exposures in more than 150,000 postmenopausal women in the Women’s Health Initiative revealed a 14% higher stroke risk in those exposed to the highest concentrations compared with those exposed to the lowest concentrations. Even moderate concentrations of radon were associated with a 6% higher stroke risk.

Radon is the second leading cause of lung cancer, but little was known about how exposure to the gas might affect stroke risk in women. 

“Our research found an increased risk of stroke among participants exposed to radon above — and as many as 2 picocuries per liter (pCi/L) below — concentrations that usually trigger Environmental Protection Agency recommendations to install a home radon mitigation system,” senior author Eric A. Whitsel, MD, MPH, professor of epidemiology and medicine, University of North Carolina, Chapel Hill, said in a news release.

The study was published online on January 31, 2024, in Neurology.

Women Particularly Affected

Radon is a naturally occurring odorless radioactive gas produced when uranium or radium break down in rocks and soil. Its presence is increasing as a result of climate change, and it is increasingly being found in people’s homes. When inhaled, this air pollutant releases ionizing radiation in the lungs and is seen as second only to smoking as an established cause of lung cancer.

The National Radon Action Plan of the US Environmental Protection Agency (EPA) lays out testing and mitigation guidelines based on the known role of radon in lung carcinogenesis. But radon testing and mitigation are less common than recommended, and the EPA’s action plan doesn’t cover diseases other than lung cancer.

Compared with men, women have a higher rate of stroke and, in the US, typically spend about 11% more hours per day indoors at home, which investigators note highlights a “potential role of the residential environment among other risk factors specific to women.”

Researchers examined longitudinal associations between home radon exposure and incident stroke in 158,910 women at baseline (mean age 63.2 years; 83% White) over a mean follow-up of 13.4 years. During this time, participants experienced a total of 6979 strokes.

Participants’ home addresses were linked to radon concentration data drawn from the US Geological Survey and the EPA, which recommends that average indoor radon concentrations not exceed 4 pCi/L. 

The highest radon exposure group resided in areas where average radon concentrations were < 4 pCi/L; the middle exposure group lived in regions with average concentrations of 2-4 pCi/L; and the lowest exposure group lived in areas with average concentrations < 2 pCi/L. 

The researchers adjusted for demographic, social, behavioral, and clinical characteristics.

Public Health Implications

The incidence rates of stroke per 100,000 women in the lowest, middle, and highest radon concentration areas were 333, 343, and 349, respectively.

Stroke risk was 6% higher among those in the middle exposure group (adjusted hazard ratio [aHR], 1.06; 95% CI, 0.99-1.13) and 14% higher in the highest exposure group (aHR, 1.14; 95% CI, 1.05-1.22) compared with the lowest exposure group.

Notably, stroke risk was significant even at concentrations ranging from 2 to 4 pCi/L (P = .0004) vs < 2 pCi/L, which is below the EPA›s Radon Action Level for mitigation. 

The findings remained robust in sensitivity analyses, although the associations were slightly stronger for ischemic stroke (especially cardioembolic, small-vessel occlusive, and very large artery atherosclerotic) compared with hemorrhagic stroke.

“Radon is an indoor air pollutant that can only be detected through testing that measures concentrations of the gas in homes,” Dr. Whitsel said in the release. “More studies are needed to confirm our findings. Confirmation would present an opportunity to improve public health by addressing an emerging risk factor for stroke.”

The study lacked gender and racial/ethnic diversity, so the findings may not be generalizable to other populations. 

“Replication studies of individual-level radon exposures are needed to confirm this positive radon-stroke association,” the authors write. “Confirmation would present a potential opportunity to affect public health by addressing a pervasive environmental risk factor for stroke and thereby merit reconsideration of extant radon policy.”

The study was funded by the National Institute of Environmental Health Sciences and National Heart, Lung, and Blood Institute. Dr. Whitsel and coauthors report no relevant financial relationships.

A version of this article appeared on Medscape.com.

Exposure to even moderate concentrations of radon is associated with a significant increase in stroke risk, new research suggests.

An analysis of radon exposures in more than 150,000 postmenopausal women in the Women’s Health Initiative revealed a 14% higher stroke risk in those exposed to the highest concentrations compared with those exposed to the lowest concentrations. Even moderate concentrations of radon were associated with a 6% higher stroke risk.

Radon is the second leading cause of lung cancer, but little was known about how exposure to the gas might affect stroke risk in women. 

“Our research found an increased risk of stroke among participants exposed to radon above — and as many as 2 picocuries per liter (pCi/L) below — concentrations that usually trigger Environmental Protection Agency recommendations to install a home radon mitigation system,” senior author Eric A. Whitsel, MD, MPH, professor of epidemiology and medicine, University of North Carolina, Chapel Hill, said in a news release.

The study was published online on January 31, 2024, in Neurology.

Women Particularly Affected

Radon is a naturally occurring odorless radioactive gas produced when uranium or radium break down in rocks and soil. Its presence is increasing as a result of climate change, and it is increasingly being found in people’s homes. When inhaled, this air pollutant releases ionizing radiation in the lungs and is seen as second only to smoking as an established cause of lung cancer.

The National Radon Action Plan of the US Environmental Protection Agency (EPA) lays out testing and mitigation guidelines based on the known role of radon in lung carcinogenesis. But radon testing and mitigation are less common than recommended, and the EPA’s action plan doesn’t cover diseases other than lung cancer.

Compared with men, women have a higher rate of stroke and, in the US, typically spend about 11% more hours per day indoors at home, which investigators note highlights a “potential role of the residential environment among other risk factors specific to women.”

Researchers examined longitudinal associations between home radon exposure and incident stroke in 158,910 women at baseline (mean age 63.2 years; 83% White) over a mean follow-up of 13.4 years. During this time, participants experienced a total of 6979 strokes.

Participants’ home addresses were linked to radon concentration data drawn from the US Geological Survey and the EPA, which recommends that average indoor radon concentrations not exceed 4 pCi/L. 

The highest radon exposure group resided in areas where average radon concentrations were < 4 pCi/L; the middle exposure group lived in regions with average concentrations of 2-4 pCi/L; and the lowest exposure group lived in areas with average concentrations < 2 pCi/L. 

The researchers adjusted for demographic, social, behavioral, and clinical characteristics.

Public Health Implications

The incidence rates of stroke per 100,000 women in the lowest, middle, and highest radon concentration areas were 333, 343, and 349, respectively.

Stroke risk was 6% higher among those in the middle exposure group (adjusted hazard ratio [aHR], 1.06; 95% CI, 0.99-1.13) and 14% higher in the highest exposure group (aHR, 1.14; 95% CI, 1.05-1.22) compared with the lowest exposure group.

Notably, stroke risk was significant even at concentrations ranging from 2 to 4 pCi/L (P = .0004) vs < 2 pCi/L, which is below the EPA›s Radon Action Level for mitigation. 

The findings remained robust in sensitivity analyses, although the associations were slightly stronger for ischemic stroke (especially cardioembolic, small-vessel occlusive, and very large artery atherosclerotic) compared with hemorrhagic stroke.

“Radon is an indoor air pollutant that can only be detected through testing that measures concentrations of the gas in homes,” Dr. Whitsel said in the release. “More studies are needed to confirm our findings. Confirmation would present an opportunity to improve public health by addressing an emerging risk factor for stroke.”

The study lacked gender and racial/ethnic diversity, so the findings may not be generalizable to other populations. 

“Replication studies of individual-level radon exposures are needed to confirm this positive radon-stroke association,” the authors write. “Confirmation would present a potential opportunity to affect public health by addressing a pervasive environmental risk factor for stroke and thereby merit reconsideration of extant radon policy.”

The study was funded by the National Institute of Environmental Health Sciences and National Heart, Lung, and Blood Institute. Dr. Whitsel and coauthors report no relevant financial relationships.

A version of this article appeared on Medscape.com.

Exposure to even moderate concentrations of radon is associated with a significant increase in stroke risk, new research suggests.

An analysis of radon exposures in more than 150,000 postmenopausal women in the Women’s Health Initiative revealed a 14% higher stroke risk in those exposed to the highest concentrations compared with those exposed to the lowest concentrations. Even moderate concentrations of radon were associated with a 6% higher stroke risk.

Radon is the second leading cause of lung cancer, but little was known about how exposure to the gas might affect stroke risk in women. 

“Our research found an increased risk of stroke among participants exposed to radon above — and as many as 2 picocuries per liter (pCi/L) below — concentrations that usually trigger Environmental Protection Agency recommendations to install a home radon mitigation system,” senior author Eric A. Whitsel, MD, MPH, professor of epidemiology and medicine, University of North Carolina, Chapel Hill, said in a news release.

The study was published online on January 31, 2024, in Neurology.

Women Particularly Affected

Radon is a naturally occurring odorless radioactive gas produced when uranium or radium break down in rocks and soil. Its presence is increasing as a result of climate change, and it is increasingly being found in people’s homes. When inhaled, this air pollutant releases ionizing radiation in the lungs and is seen as second only to smoking as an established cause of lung cancer.

The National Radon Action Plan of the US Environmental Protection Agency (EPA) lays out testing and mitigation guidelines based on the known role of radon in lung carcinogenesis. But radon testing and mitigation are less common than recommended, and the EPA’s action plan doesn’t cover diseases other than lung cancer.

Compared with men, women have a higher rate of stroke and, in the US, typically spend about 11% more hours per day indoors at home, which investigators note highlights a “potential role of the residential environment among other risk factors specific to women.”

Researchers examined longitudinal associations between home radon exposure and incident stroke in 158,910 women at baseline (mean age 63.2 years; 83% White) over a mean follow-up of 13.4 years. During this time, participants experienced a total of 6979 strokes.

Participants’ home addresses were linked to radon concentration data drawn from the US Geological Survey and the EPA, which recommends that average indoor radon concentrations not exceed 4 pCi/L. 

The highest radon exposure group resided in areas where average radon concentrations were < 4 pCi/L; the middle exposure group lived in regions with average concentrations of 2-4 pCi/L; and the lowest exposure group lived in areas with average concentrations < 2 pCi/L. 

The researchers adjusted for demographic, social, behavioral, and clinical characteristics.

Public Health Implications

The incidence rates of stroke per 100,000 women in the lowest, middle, and highest radon concentration areas were 333, 343, and 349, respectively.

Stroke risk was 6% higher among those in the middle exposure group (adjusted hazard ratio [aHR], 1.06; 95% CI, 0.99-1.13) and 14% higher in the highest exposure group (aHR, 1.14; 95% CI, 1.05-1.22) compared with the lowest exposure group.

Notably, stroke risk was significant even at concentrations ranging from 2 to 4 pCi/L (P = .0004) vs < 2 pCi/L, which is below the EPA›s Radon Action Level for mitigation. 

The findings remained robust in sensitivity analyses, although the associations were slightly stronger for ischemic stroke (especially cardioembolic, small-vessel occlusive, and very large artery atherosclerotic) compared with hemorrhagic stroke.

“Radon is an indoor air pollutant that can only be detected through testing that measures concentrations of the gas in homes,” Dr. Whitsel said in the release. “More studies are needed to confirm our findings. Confirmation would present an opportunity to improve public health by addressing an emerging risk factor for stroke.”

The study lacked gender and racial/ethnic diversity, so the findings may not be generalizable to other populations. 

“Replication studies of individual-level radon exposures are needed to confirm this positive radon-stroke association,” the authors write. “Confirmation would present a potential opportunity to affect public health by addressing a pervasive environmental risk factor for stroke and thereby merit reconsideration of extant radon policy.”

The study was funded by the National Institute of Environmental Health Sciences and National Heart, Lung, and Blood Institute. Dr. Whitsel and coauthors report no relevant financial relationships.

A version of this article appeared on Medscape.com.

Men prescribed drugs to treat newly diagnosed erectile dysfunction (ED) are 18% less likely to develop Alzheimer’s disease (AD) during a 5-year follow-up period, new research shows. 

The study is the second in recent years to suggest an association between the use of phosphodiesterase type 5 inhibitors (PDE5Is) such as sildenafil (Viagra) or tadalafil (Cialis) and AD risk. The findings contradict those in a third study, reported by this news organization, that showed no link between the two. 

Although the research is interesting, outside experts noted that there is no evidence that the drugs can treat AD and urge caution when interpreting the findings. 

Investigators agree but believe that the results offer a direction for future studies and underscore the importance of investigating whether existing approved therapies can be repurposed to treat AD. 

“The positive findings from our large study in over 250,000 men is promising and can be used to enhance research capacity and knowledge, with a potential future impact on clinical use and public health policy,” senior author Ruth Brauer, PhD, of the University College London, told this news organization.

“However, before recommending PDE5I are used to reduce the risk of AD, more work is required to validate the findings of our work, particularly in a more generalizable population that includes women and men without erectile dysfunction,” she continued.

The findings were published online February 7 in Neurology.

Strong Association

The study drew on primary healthcare data from the United Kingdom and included 269,725 men (average age, 59 years) with newly diagnosed ED, 55% of whom had received prescriptions for PDE5Is. 

Participants were free from memory or cognitive issues when the study began and were followed for a median of 5.1 years. Investigators accounted for a range of potential AD risk factors, including smoking status, alcohol use, body mass index, hypertension, diabetes, depression, anxiety, and concomitant medication use.

During the study period, 749 in the PDE5I group were diagnosed with AD, corresponding to a rate of 8.1 cases per 10,000 person-years. Among those who did not take the drugs, 370 developed AD, corresponding to a rate of 9.7 cases per 10,000 person-years.

Overall, initiation of a PDE5I was associated with an 18% lower risk for AD (adjusted hazard ration [aHR], 0.82; 95% CI, 0.72-0.93) compared with those with no prescriptions. 

The association was stronger in people aged 70 years or older and those with a history of hypertension or diabetes. The greatest risk reduction was found in people with the most prescriptions during the study period. Those with 21-50 prescriptions had a 44% lower risk for AD (aHR, 0.56; 95% CI, 0.43-0.73) and those with more than 50 were 35% less likely to be diagnosed with AD (aHR, 0.65; 95% CI, 0.49-0.87).

There was no association with AD risk in individuals who received fewer than 20 prescriptions. 

Investigators also analyzed associations after introducing a 1- and 3-year lag period after cohort entry to address the latent period between AD onset and diagnosis. The primary findings held with a 1-year lag period but lost significance with the inclusion of a 3-year lag period.

In subgroup analyses, investigators found evidence of reduced AD risk in those who received prescriptions for sildenafil (aHR, 0.81; 95% CI, 0.71-0.93), but there was no evidence for reduced risk compared with nonusers in those who received tadalafil and vardenafil.

Lower AD risk was found in patients with hypertension, diabetes, and in men aged 70 years or older, but there was no association in younger men or those with no history of hypertension or diabetes. 

Although investigators controlled for a wide range of potential risk factors, Dr. Brauer noted that unmeasured confounders such as physical and sexual activity, which were not tracked and may predict PDE5I exposure, may have affected the results. 

Interpret With Caution

Commenting on the findings, Ozama Ismail, PhD, Alzheimer’s Association director of scientific programs, noted that in addition to the limitations cited by the study authors, AD diagnoses were not made with the “gold standard” testing that typically includes imaging biomarkers and postmortem assessments. 

“While this study is interesting and adds to a potential association, there is no evidence that these drugs are able to treat Alzheimer’s disease,” said Dr. Brauer, who was not part of the current study. 

“People should not use over-the-counter phosphodiesterase type 5 inhibitors for prevention of Alzheimer’s or other dementias based on this very preliminary finding. Always consult with your physician before starting or changing your medications,” he cautioned.

However, Dr. Ismael added that the study does highlight a potential new avenue for drug repurposing. 

“Repurposing of existing, already-approved treatments can be a valuable part of drug development because, through already-completed testing, we know much about their safety and side effects,” which can decrease cost and time needed for studies, he said. 

“When considering repurposing an existing drug to an Alzheimer’s treatment, however, it is often important to conduct new studies over longer periods of time and in older people that reflect the diversity of individuals living with Alzheimer’s disease,” Dr. Ismael said.

Randomized Trials Needed

Dr. Brauer agreed, offering that such a trial should also include people with mild cognitive impairment and measure the effects of PDE5Is given in predefined doses plus an acetylcholinesterase inhibitor or placebo plus an acetylcholinesterase inhibitor. 

“The primary outcome would be the change in baseline cognitive function,” she said. “This approach would provide a comprehensive understanding of the potential therapeutic benefits of PDE5I and AD.”

Studies are also needed to better understand the mechanisms by which these drugs might influence AD risk, Sevil Yasar, MD, PhD, and Lolita Nidadavolu, MD, PhD, from the Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, noted in an accompanying editorial.

The strong association between PDE5I use and AD risk in people with a history of hypertension or diabetes suggests “a potential neuroprotective effect through a vascular pathway,” they wrote.

In vitro studies on the role of inflammation and clearance of beta-amyloid could strengthen findings from studies like this one, and in vivo studies could help explain the mechanisms behind PDE5I use and lower AD risk, Dr. Yasar and Dr. Nidadavolu noted. 

“In the end, however, further observational studies exploring mechanisms will not prove a causal association,” they wrote. “A well-designed randomized controlled trial is needed before PDE5I drugs can be prescribed for AD prevention.”

The study was unfunded. The study and editorial authors and Dr. Ismail report no relevant financial conflicts. 
 

A version of this article appeared on Medscape.com.

Men prescribed drugs to treat newly diagnosed erectile dysfunction (ED) are 18% less likely to develop Alzheimer’s disease (AD) during a 5-year follow-up period, new research shows. 

The study is the second in recent years to suggest an association between the use of phosphodiesterase type 5 inhibitors (PDE5Is) such as sildenafil (Viagra) or tadalafil (Cialis) and AD risk. The findings contradict those in a third study, reported by this news organization, that showed no link between the two. 

Although the research is interesting, outside experts noted that there is no evidence that the drugs can treat AD and urge caution when interpreting the findings. 

Investigators agree but believe that the results offer a direction for future studies and underscore the importance of investigating whether existing approved therapies can be repurposed to treat AD. 

“The positive findings from our large study in over 250,000 men is promising and can be used to enhance research capacity and knowledge, with a potential future impact on clinical use and public health policy,” senior author Ruth Brauer, PhD, of the University College London, told this news organization.

“However, before recommending PDE5I are used to reduce the risk of AD, more work is required to validate the findings of our work, particularly in a more generalizable population that includes women and men without erectile dysfunction,” she continued.

The findings were published online February 7 in Neurology.

Strong Association

The study drew on primary healthcare data from the United Kingdom and included 269,725 men (average age, 59 years) with newly diagnosed ED, 55% of whom had received prescriptions for PDE5Is. 

Participants were free from memory or cognitive issues when the study began and were followed for a median of 5.1 years. Investigators accounted for a range of potential AD risk factors, including smoking status, alcohol use, body mass index, hypertension, diabetes, depression, anxiety, and concomitant medication use.

During the study period, 749 in the PDE5I group were diagnosed with AD, corresponding to a rate of 8.1 cases per 10,000 person-years. Among those who did not take the drugs, 370 developed AD, corresponding to a rate of 9.7 cases per 10,000 person-years.

Overall, initiation of a PDE5I was associated with an 18% lower risk for AD (adjusted hazard ration [aHR], 0.82; 95% CI, 0.72-0.93) compared with those with no prescriptions. 

The association was stronger in people aged 70 years or older and those with a history of hypertension or diabetes. The greatest risk reduction was found in people with the most prescriptions during the study period. Those with 21-50 prescriptions had a 44% lower risk for AD (aHR, 0.56; 95% CI, 0.43-0.73) and those with more than 50 were 35% less likely to be diagnosed with AD (aHR, 0.65; 95% CI, 0.49-0.87).

There was no association with AD risk in individuals who received fewer than 20 prescriptions. 

Investigators also analyzed associations after introducing a 1- and 3-year lag period after cohort entry to address the latent period between AD onset and diagnosis. The primary findings held with a 1-year lag period but lost significance with the inclusion of a 3-year lag period.

In subgroup analyses, investigators found evidence of reduced AD risk in those who received prescriptions for sildenafil (aHR, 0.81; 95% CI, 0.71-0.93), but there was no evidence for reduced risk compared with nonusers in those who received tadalafil and vardenafil.

Lower AD risk was found in patients with hypertension, diabetes, and in men aged 70 years or older, but there was no association in younger men or those with no history of hypertension or diabetes. 

Although investigators controlled for a wide range of potential risk factors, Dr. Brauer noted that unmeasured confounders such as physical and sexual activity, which were not tracked and may predict PDE5I exposure, may have affected the results. 

Interpret With Caution

Commenting on the findings, Ozama Ismail, PhD, Alzheimer’s Association director of scientific programs, noted that in addition to the limitations cited by the study authors, AD diagnoses were not made with the “gold standard” testing that typically includes imaging biomarkers and postmortem assessments. 

“While this study is interesting and adds to a potential association, there is no evidence that these drugs are able to treat Alzheimer’s disease,” said Dr. Brauer, who was not part of the current study. 

“People should not use over-the-counter phosphodiesterase type 5 inhibitors for prevention of Alzheimer’s or other dementias based on this very preliminary finding. Always consult with your physician before starting or changing your medications,” he cautioned.

However, Dr. Ismael added that the study does highlight a potential new avenue for drug repurposing. 

“Repurposing of existing, already-approved treatments can be a valuable part of drug development because, through already-completed testing, we know much about their safety and side effects,” which can decrease cost and time needed for studies, he said. 

“When considering repurposing an existing drug to an Alzheimer’s treatment, however, it is often important to conduct new studies over longer periods of time and in older people that reflect the diversity of individuals living with Alzheimer’s disease,” Dr. Ismael said.

Randomized Trials Needed

Dr. Brauer agreed, offering that such a trial should also include people with mild cognitive impairment and measure the effects of PDE5Is given in predefined doses plus an acetylcholinesterase inhibitor or placebo plus an acetylcholinesterase inhibitor. 

“The primary outcome would be the change in baseline cognitive function,” she said. “This approach would provide a comprehensive understanding of the potential therapeutic benefits of PDE5I and AD.”

Studies are also needed to better understand the mechanisms by which these drugs might influence AD risk, Sevil Yasar, MD, PhD, and Lolita Nidadavolu, MD, PhD, from the Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, noted in an accompanying editorial.

The strong association between PDE5I use and AD risk in people with a history of hypertension or diabetes suggests “a potential neuroprotective effect through a vascular pathway,” they wrote.

In vitro studies on the role of inflammation and clearance of beta-amyloid could strengthen findings from studies like this one, and in vivo studies could help explain the mechanisms behind PDE5I use and lower AD risk, Dr. Yasar and Dr. Nidadavolu noted. 

“In the end, however, further observational studies exploring mechanisms will not prove a causal association,” they wrote. “A well-designed randomized controlled trial is needed before PDE5I drugs can be prescribed for AD prevention.”

The study was unfunded. The study and editorial authors and Dr. Ismail report no relevant financial conflicts. 
 

A version of this article appeared on Medscape.com.

Men prescribed drugs to treat newly diagnosed erectile dysfunction (ED) are 18% less likely to develop Alzheimer’s disease (AD) during a 5-year follow-up period, new research shows. 

The study is the second in recent years to suggest an association between the use of phosphodiesterase type 5 inhibitors (PDE5Is) such as sildenafil (Viagra) or tadalafil (Cialis) and AD risk. The findings contradict those in a third study, reported by this news organization, that showed no link between the two. 

Although the research is interesting, outside experts noted that there is no evidence that the drugs can treat AD and urge caution when interpreting the findings. 

Investigators agree but believe that the results offer a direction for future studies and underscore the importance of investigating whether existing approved therapies can be repurposed to treat AD. 

“The positive findings from our large study in over 250,000 men is promising and can be used to enhance research capacity and knowledge, with a potential future impact on clinical use and public health policy,” senior author Ruth Brauer, PhD, of the University College London, told this news organization.

“However, before recommending PDE5I are used to reduce the risk of AD, more work is required to validate the findings of our work, particularly in a more generalizable population that includes women and men without erectile dysfunction,” she continued.

The findings were published online February 7 in Neurology.

Strong Association

The study drew on primary healthcare data from the United Kingdom and included 269,725 men (average age, 59 years) with newly diagnosed ED, 55% of whom had received prescriptions for PDE5Is. 

Participants were free from memory or cognitive issues when the study began and were followed for a median of 5.1 years. Investigators accounted for a range of potential AD risk factors, including smoking status, alcohol use, body mass index, hypertension, diabetes, depression, anxiety, and concomitant medication use.

During the study period, 749 in the PDE5I group were diagnosed with AD, corresponding to a rate of 8.1 cases per 10,000 person-years. Among those who did not take the drugs, 370 developed AD, corresponding to a rate of 9.7 cases per 10,000 person-years.

Overall, initiation of a PDE5I was associated with an 18% lower risk for AD (adjusted hazard ration [aHR], 0.82; 95% CI, 0.72-0.93) compared with those with no prescriptions. 

The association was stronger in people aged 70 years or older and those with a history of hypertension or diabetes. The greatest risk reduction was found in people with the most prescriptions during the study period. Those with 21-50 prescriptions had a 44% lower risk for AD (aHR, 0.56; 95% CI, 0.43-0.73) and those with more than 50 were 35% less likely to be diagnosed with AD (aHR, 0.65; 95% CI, 0.49-0.87).

There was no association with AD risk in individuals who received fewer than 20 prescriptions. 

Investigators also analyzed associations after introducing a 1- and 3-year lag period after cohort entry to address the latent period between AD onset and diagnosis. The primary findings held with a 1-year lag period but lost significance with the inclusion of a 3-year lag period.

In subgroup analyses, investigators found evidence of reduced AD risk in those who received prescriptions for sildenafil (aHR, 0.81; 95% CI, 0.71-0.93), but there was no evidence for reduced risk compared with nonusers in those who received tadalafil and vardenafil.

Lower AD risk was found in patients with hypertension, diabetes, and in men aged 70 years or older, but there was no association in younger men or those with no history of hypertension or diabetes. 

Although investigators controlled for a wide range of potential risk factors, Dr. Brauer noted that unmeasured confounders such as physical and sexual activity, which were not tracked and may predict PDE5I exposure, may have affected the results. 

Interpret With Caution

Commenting on the findings, Ozama Ismail, PhD, Alzheimer’s Association director of scientific programs, noted that in addition to the limitations cited by the study authors, AD diagnoses were not made with the “gold standard” testing that typically includes imaging biomarkers and postmortem assessments. 

“While this study is interesting and adds to a potential association, there is no evidence that these drugs are able to treat Alzheimer’s disease,” said Dr. Brauer, who was not part of the current study. 

“People should not use over-the-counter phosphodiesterase type 5 inhibitors for prevention of Alzheimer’s or other dementias based on this very preliminary finding. Always consult with your physician before starting or changing your medications,” he cautioned.

However, Dr. Ismael added that the study does highlight a potential new avenue for drug repurposing. 

“Repurposing of existing, already-approved treatments can be a valuable part of drug development because, through already-completed testing, we know much about their safety and side effects,” which can decrease cost and time needed for studies, he said. 

“When considering repurposing an existing drug to an Alzheimer’s treatment, however, it is often important to conduct new studies over longer periods of time and in older people that reflect the diversity of individuals living with Alzheimer’s disease,” Dr. Ismael said.

Randomized Trials Needed

Dr. Brauer agreed, offering that such a trial should also include people with mild cognitive impairment and measure the effects of PDE5Is given in predefined doses plus an acetylcholinesterase inhibitor or placebo plus an acetylcholinesterase inhibitor. 

“The primary outcome would be the change in baseline cognitive function,” she said. “This approach would provide a comprehensive understanding of the potential therapeutic benefits of PDE5I and AD.”

Studies are also needed to better understand the mechanisms by which these drugs might influence AD risk, Sevil Yasar, MD, PhD, and Lolita Nidadavolu, MD, PhD, from the Division of Geriatric Medicine and Gerontology, Johns Hopkins University School of Medicine, Baltimore, noted in an accompanying editorial.

The strong association between PDE5I use and AD risk in people with a history of hypertension or diabetes suggests “a potential neuroprotective effect through a vascular pathway,” they wrote.

In vitro studies on the role of inflammation and clearance of beta-amyloid could strengthen findings from studies like this one, and in vivo studies could help explain the mechanisms behind PDE5I use and lower AD risk, Dr. Yasar and Dr. Nidadavolu noted. 

“In the end, however, further observational studies exploring mechanisms will not prove a causal association,” they wrote. “A well-designed randomized controlled trial is needed before PDE5I drugs can be prescribed for AD prevention.”

The study was unfunded. The study and editorial authors and Dr. Ismail report no relevant financial conflicts. 
 

A version of this article appeared on Medscape.com.