Anemia

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy 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.

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy 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.

“Petechial rash often prompts further investigation into hematological, dermatological, or vasculitis causes. However, if the above investigations are negative and skin biopsy has not revealed a cause, there is a Renaissance-era diagnosis that is often overlooked but is easily investigated and treated,” wrote Andrew Dermawan, MD, and colleagues from Sir Charles Gairdner Hospital in Nedlands, Australia, in BMJ Case Reports. The diagnosis they highlight is scurvy, a disease that has faded from common medical concern but is reemerging, partly because of the rise in bariatric surgery.

Diagnosing Scurvy in the 2020s

In their article, Dermawan and colleagues present the case of a 50-year-old man with a bilateral petechial rash on his lower limbs, without any history of trauma. The patient, who exhibited no infectious symptoms, also had gross hematuria, microcytic anemia, mild neutropenia, and lymphopenia. Tests for autoimmune and hematological diseases were negative, as were abdominal and leg CT scans, ruling out abdominal hemorrhage and vasculitis. Additionally, a skin biopsy showed no causative findings.

The doctors noted that the patient had undergone sleeve gastrectomy, prompting them to inquire about his diet. They discovered that, because of financial difficulties, his diet primarily consisted of processed foods with little to no fruits or vegetables, and he had stopped taking supplements recommended by his gastroenterologist. Further tests revealed a vitamin D deficiency and a severe deficiency in vitamin C. With the diagnosis of scurvy confirmed, the doctors treated the patient with 1000 mg of ascorbic acid daily, along with cholecalciferol, folic acid, and a multivitamin complex, leading to a complete resolution of his symptoms.
 

Risk Factors Then and Now

Scurvy can present with a range of symptoms, including petechiae, perifollicular hemorrhage, ecchymosis, gingivitis, edema, anemia, delayed wound healing, malaise, weakness, joint swelling, arthralgia, anorexia, neuropathy, and vasomotor instability. It can cause mucosal and gastric hemorrhages, and if left untreated, it can lead to fatal bleeding.

Historically known as “sailors’ disease,” scurvy plagued men on long voyages who lacked access to fresh fruits or vegetables and thus did not get enough vitamin C. In 1747, James Lind, a British physician in the Royal Navy, demonstrated that the consumption of oranges and lemons could combat scurvy.

Today’s risk factors for scurvy include malnutrition, gastrointestinal disorders (eg, chronic inflammatory bowel diseases), alcohol and tobacco use, eating disorders, psychiatric illnesses, dialysis, and the use of medications that reduce the absorption of ascorbic acid (such as corticosteroids and proton pump inhibitors).

Scurvy remains more common among individuals with unfavorable socioeconomic conditions. The authors of the study emphasize how the rising cost of living — specifically in Australia but applicable elsewhere — is changing eating habits, leading to a high consumption of low-cost, nutritionally poor foods.

Poverty has always been a risk factor for scurvy, but today there may be an additional cause: bariatric surgery. Patients undergoing these procedures are at a risk for deficiencies in fat-soluble vitamins A, D, E, and K, and if their diet is inadequate, they may also experience a vitamin C deficiency. Awareness of this can facilitate the timely diagnosis of scurvy in these patients.

This story was translated from Univadis Italy 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.

Ferritin is the parameter most often used in primary care to diagnose iron deficiency. The cutoff value of ferritin can affect the number of cases diagnosed, however. A study published in JAMA Network Open  investigated how different cutoff values affect the diagnosis of iron deficiency.

The study, which included 255,351 adult primary care patients in Switzerland, showed that ferritin cutoff values of 15, 30, and 45 ng/mL were associated with incidences of iron deficiency diagnoses of 10.9, 29.9, and 48.3 cases per 1000 patient-years, respectively. In other words, as the cutoff value increases, the frequency of diagnosis also increases.

“It is a study to take into account, especially because of the number of patients it includes, and it can guide primary care clinical practice. As expected, as the cutoff point increases with respect to ferritin values, the incidence percentages of both iron deficiency and iron-deficiency anemia also increase,” Miguel Turégano-Yedro, MD, a family physician at the Casar de Cáceres Health Center in Spain, and coordinator of the Hematology Working Group of the Spanish Society of Primary Care Physicians, told this news organization. Ferritin is the most sensitive parameter for diagnosing iron deficiency and iron-deficiency anemia, he added. “When it is necessary to supplement a patient with iron, other parameters are taken into account, such as hemoglobin, to see if there is anemia.”
 

Ferritin Level

The ferritin level associated with iron deficiency in primary care is usually 15 ng/mL, said Dr. Turégano-Yedro. “If we assess patients with a ferritin level of 15 or less than 15, then we know that many cases will be symptomatic (with fatigue, tiredness, or lack of appetite) and, therefore, will need iron treatment. But if the ferritin cutoff value is increased to 30 ng/mL or 45 ng/mL, the incidence will be higher, although in many cases they will be asymptomatic and iron supplementation will not be necessary.”

He also pointed out that he does not consider it necessary to raise the cutoff to 45 ng/mL; however, “establishing the cutoff at 30 ng/mL, in a certain population at risk of iron deficiency or iron-deficiency anemia, may be interesting, for example in women of childbearing age, women with very heavy menstruation, children, frail elderly, people with gastrointestinal bleeding, or those who engage in physical exercise.”

Iron deficiency must be distinguished from anemia. “If the ferritin is below 15 ng/mL, there is iron deficiency, which may or may not be accompanied by symptoms, although usually most patients will have symptoms. Normally, to diagnose a patient with iron-deficiency anemia, on the one hand, they must have low hemoglobin, which indicates anemia, and on the other hand, low ferritin, which indicates iron deficiency.” Taking these parameters into account, the study does have a weakness. “It is striking that a percentage of patients in the study requested ferritin analysis without including hemoglobin, when hemoglobin is part of the basic analysis performed in Spain,” said Dr. Turégano-Yedro.
 

When to Supplement

The study highlights the incidence of nonanemic iron deficiency diagnoses associated with the choice of ferritin cutoff value. However, as Dr. Turégano-Yedro explained, the percentage of patients who have iron deficiency but do not have anemia is not very relevant. “In the case of family physicians in Spain, it is not usually taken into account, because if a patient has iron deficiency with or without anemia and is symptomatic, they should be given iron supplements.”

What if they do not have a deficiency but do have anemia? “In principle, iron supplementation is not necessary, because that anemia may be due to chronic disorders or it may be hemolytic anemia, so the case should be studied,” Dr. Turégano-Yedro concluded.

This story was translated from Univadis Spain, which is part of the Medscape Professional Network, 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.

Ferritin is the parameter most often used in primary care to diagnose iron deficiency. The cutoff value of ferritin can affect the number of cases diagnosed, however. A study published in JAMA Network Open  investigated how different cutoff values affect the diagnosis of iron deficiency.

The study, which included 255,351 adult primary care patients in Switzerland, showed that ferritin cutoff values of 15, 30, and 45 ng/mL were associated with incidences of iron deficiency diagnoses of 10.9, 29.9, and 48.3 cases per 1000 patient-years, respectively. In other words, as the cutoff value increases, the frequency of diagnosis also increases.

“It is a study to take into account, especially because of the number of patients it includes, and it can guide primary care clinical practice. As expected, as the cutoff point increases with respect to ferritin values, the incidence percentages of both iron deficiency and iron-deficiency anemia also increase,” Miguel Turégano-Yedro, MD, a family physician at the Casar de Cáceres Health Center in Spain, and coordinator of the Hematology Working Group of the Spanish Society of Primary Care Physicians, told this news organization. Ferritin is the most sensitive parameter for diagnosing iron deficiency and iron-deficiency anemia, he added. “When it is necessary to supplement a patient with iron, other parameters are taken into account, such as hemoglobin, to see if there is anemia.”
 

Ferritin Level

The ferritin level associated with iron deficiency in primary care is usually 15 ng/mL, said Dr. Turégano-Yedro. “If we assess patients with a ferritin level of 15 or less than 15, then we know that many cases will be symptomatic (with fatigue, tiredness, or lack of appetite) and, therefore, will need iron treatment. But if the ferritin cutoff value is increased to 30 ng/mL or 45 ng/mL, the incidence will be higher, although in many cases they will be asymptomatic and iron supplementation will not be necessary.”

He also pointed out that he does not consider it necessary to raise the cutoff to 45 ng/mL; however, “establishing the cutoff at 30 ng/mL, in a certain population at risk of iron deficiency or iron-deficiency anemia, may be interesting, for example in women of childbearing age, women with very heavy menstruation, children, frail elderly, people with gastrointestinal bleeding, or those who engage in physical exercise.”

Iron deficiency must be distinguished from anemia. “If the ferritin is below 15 ng/mL, there is iron deficiency, which may or may not be accompanied by symptoms, although usually most patients will have symptoms. Normally, to diagnose a patient with iron-deficiency anemia, on the one hand, they must have low hemoglobin, which indicates anemia, and on the other hand, low ferritin, which indicates iron deficiency.” Taking these parameters into account, the study does have a weakness. “It is striking that a percentage of patients in the study requested ferritin analysis without including hemoglobin, when hemoglobin is part of the basic analysis performed in Spain,” said Dr. Turégano-Yedro.
 

When to Supplement

The study highlights the incidence of nonanemic iron deficiency diagnoses associated with the choice of ferritin cutoff value. However, as Dr. Turégano-Yedro explained, the percentage of patients who have iron deficiency but do not have anemia is not very relevant. “In the case of family physicians in Spain, it is not usually taken into account, because if a patient has iron deficiency with or without anemia and is symptomatic, they should be given iron supplements.”

What if they do not have a deficiency but do have anemia? “In principle, iron supplementation is not necessary, because that anemia may be due to chronic disorders or it may be hemolytic anemia, so the case should be studied,” Dr. Turégano-Yedro concluded.

This story was translated from Univadis Spain, which is part of the Medscape Professional Network, 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.

Ferritin is the parameter most often used in primary care to diagnose iron deficiency. The cutoff value of ferritin can affect the number of cases diagnosed, however. A study published in JAMA Network Open  investigated how different cutoff values affect the diagnosis of iron deficiency.

The study, which included 255,351 adult primary care patients in Switzerland, showed that ferritin cutoff values of 15, 30, and 45 ng/mL were associated with incidences of iron deficiency diagnoses of 10.9, 29.9, and 48.3 cases per 1000 patient-years, respectively. In other words, as the cutoff value increases, the frequency of diagnosis also increases.

“It is a study to take into account, especially because of the number of patients it includes, and it can guide primary care clinical practice. As expected, as the cutoff point increases with respect to ferritin values, the incidence percentages of both iron deficiency and iron-deficiency anemia also increase,” Miguel Turégano-Yedro, MD, a family physician at the Casar de Cáceres Health Center in Spain, and coordinator of the Hematology Working Group of the Spanish Society of Primary Care Physicians, told this news organization. Ferritin is the most sensitive parameter for diagnosing iron deficiency and iron-deficiency anemia, he added. “When it is necessary to supplement a patient with iron, other parameters are taken into account, such as hemoglobin, to see if there is anemia.”
 

Ferritin Level

The ferritin level associated with iron deficiency in primary care is usually 15 ng/mL, said Dr. Turégano-Yedro. “If we assess patients with a ferritin level of 15 or less than 15, then we know that many cases will be symptomatic (with fatigue, tiredness, or lack of appetite) and, therefore, will need iron treatment. But if the ferritin cutoff value is increased to 30 ng/mL or 45 ng/mL, the incidence will be higher, although in many cases they will be asymptomatic and iron supplementation will not be necessary.”

He also pointed out that he does not consider it necessary to raise the cutoff to 45 ng/mL; however, “establishing the cutoff at 30 ng/mL, in a certain population at risk of iron deficiency or iron-deficiency anemia, may be interesting, for example in women of childbearing age, women with very heavy menstruation, children, frail elderly, people with gastrointestinal bleeding, or those who engage in physical exercise.”

Iron deficiency must be distinguished from anemia. “If the ferritin is below 15 ng/mL, there is iron deficiency, which may or may not be accompanied by symptoms, although usually most patients will have symptoms. Normally, to diagnose a patient with iron-deficiency anemia, on the one hand, they must have low hemoglobin, which indicates anemia, and on the other hand, low ferritin, which indicates iron deficiency.” Taking these parameters into account, the study does have a weakness. “It is striking that a percentage of patients in the study requested ferritin analysis without including hemoglobin, when hemoglobin is part of the basic analysis performed in Spain,” said Dr. Turégano-Yedro.
 

When to Supplement

The study highlights the incidence of nonanemic iron deficiency diagnoses associated with the choice of ferritin cutoff value. However, as Dr. Turégano-Yedro explained, the percentage of patients who have iron deficiency but do not have anemia is not very relevant. “In the case of family physicians in Spain, it is not usually taken into account, because if a patient has iron deficiency with or without anemia and is symptomatic, they should be given iron supplements.”

What if they do not have a deficiency but do have anemia? “In principle, iron supplementation is not necessary, because that anemia may be due to chronic disorders or it may be hemolytic anemia, so the case should be studied,” Dr. Turégano-Yedro concluded.

This story was translated from Univadis Spain, which is part of the Medscape Professional Network, 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.

Nearly one-third of US adults may have low iron levels that can add to problems ranging from fatigue to heart failure. 

Researchers in a new study estimated that 7% of US adults have anemia, a blood disorder that can be iron related and is particularly well-known in part because of screenings given during pregnancy. But more striking was the finding in this latest study that a significant portion of the population may have less severe iron deficiencies that have been linked to serious health problems.

The body gets iron from food, and it can store iron for times when there isn’t enough it can access right away. The research team looked at test results that show whether people have enough iron stored, as well as whether their bodies could effectively use available iron. If you don’t have enough iron stored, you have a condition called absolute iron deficiency. And if you have stored iron but problems using it, you have what’s called functional iron deficiency. The study found that an estimated 14% of adults have absolute iron deficiency, and another 15% have functional iron deficiency.

The findings, published in JAMA Network Open, are based on data from more than 8,000 people who had laboratory iron levels on file as part of the National Health and Nutrition Examination Survey that was done from 2017 to 2020.

Besides anemia, iron deficiency is linked to other serious health problems, including restless legs syndrome, mental and thinking difficulties, reduced physical abilities, and heart failure, the authors noted. The effects of iron deficiency can significantly impact a person’s quality of life.

Routine blood work as part of an annual physical doesn’t typically include a check of iron levels unless there is a cause for concern. The out-of-pocket cost without using insurance for a blood test to check iron levels is typically around $60. 

“This is a common yet underappreciated public health problem,” study author Leo Buckley, PharmD, MPH, a clinical pharmacology specialist at Brigham and Women’s Hospital in Boston, Massachusetts, told NBC News. “What’s unique about our study is we were looking at regular people who would not otherwise have been screened or tested.”

Treatment for low iron levels can include changes to your diet, as well as intravenous or oral supplements. Taking an iron supplement should be done under the guidance of a health care provider because of the risk of iron toxicity.

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

Nearly one-third of US adults may have low iron levels that can add to problems ranging from fatigue to heart failure. 

Researchers in a new study estimated that 7% of US adults have anemia, a blood disorder that can be iron related and is particularly well-known in part because of screenings given during pregnancy. But more striking was the finding in this latest study that a significant portion of the population may have less severe iron deficiencies that have been linked to serious health problems.

The body gets iron from food, and it can store iron for times when there isn’t enough it can access right away. The research team looked at test results that show whether people have enough iron stored, as well as whether their bodies could effectively use available iron. If you don’t have enough iron stored, you have a condition called absolute iron deficiency. And if you have stored iron but problems using it, you have what’s called functional iron deficiency. The study found that an estimated 14% of adults have absolute iron deficiency, and another 15% have functional iron deficiency.

The findings, published in JAMA Network Open, are based on data from more than 8,000 people who had laboratory iron levels on file as part of the National Health and Nutrition Examination Survey that was done from 2017 to 2020.

Besides anemia, iron deficiency is linked to other serious health problems, including restless legs syndrome, mental and thinking difficulties, reduced physical abilities, and heart failure, the authors noted. The effects of iron deficiency can significantly impact a person’s quality of life.

Routine blood work as part of an annual physical doesn’t typically include a check of iron levels unless there is a cause for concern. The out-of-pocket cost without using insurance for a blood test to check iron levels is typically around $60. 

“This is a common yet underappreciated public health problem,” study author Leo Buckley, PharmD, MPH, a clinical pharmacology specialist at Brigham and Women’s Hospital in Boston, Massachusetts, told NBC News. “What’s unique about our study is we were looking at regular people who would not otherwise have been screened or tested.”

Treatment for low iron levels can include changes to your diet, as well as intravenous or oral supplements. Taking an iron supplement should be done under the guidance of a health care provider because of the risk of iron toxicity.

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

Nearly one-third of US adults may have low iron levels that can add to problems ranging from fatigue to heart failure. 

Researchers in a new study estimated that 7% of US adults have anemia, a blood disorder that can be iron related and is particularly well-known in part because of screenings given during pregnancy. But more striking was the finding in this latest study that a significant portion of the population may have less severe iron deficiencies that have been linked to serious health problems.

The body gets iron from food, and it can store iron for times when there isn’t enough it can access right away. The research team looked at test results that show whether people have enough iron stored, as well as whether their bodies could effectively use available iron. If you don’t have enough iron stored, you have a condition called absolute iron deficiency. And if you have stored iron but problems using it, you have what’s called functional iron deficiency. The study found that an estimated 14% of adults have absolute iron deficiency, and another 15% have functional iron deficiency.

The findings, published in JAMA Network Open, are based on data from more than 8,000 people who had laboratory iron levels on file as part of the National Health and Nutrition Examination Survey that was done from 2017 to 2020.

Besides anemia, iron deficiency is linked to other serious health problems, including restless legs syndrome, mental and thinking difficulties, reduced physical abilities, and heart failure, the authors noted. The effects of iron deficiency can significantly impact a person’s quality of life.

Routine blood work as part of an annual physical doesn’t typically include a check of iron levels unless there is a cause for concern. The out-of-pocket cost without using insurance for a blood test to check iron levels is typically around $60. 

“This is a common yet underappreciated public health problem,” study author Leo Buckley, PharmD, MPH, a clinical pharmacology specialist at Brigham and Women’s Hospital in Boston, Massachusetts, told NBC News. “What’s unique about our study is we were looking at regular people who would not otherwise have been screened or tested.”

Treatment for low iron levels can include changes to your diet, as well as intravenous or oral supplements. Taking an iron supplement should be done under the guidance of a health care provider because of the risk of iron toxicity.

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

TOPLINE: 

Intravenous iron reduced iron deficiency more effectively than oral iron, which is often distasteful, among pregnant women in Nigeria. However, no significant difference was found in the prevalence of anemia or preterm birth between the two groups.

METHODOLOGY:

• A total of 1056 pregnant women aged 15-49 years with hemoglobin concentrations 10 g/dL at 20-32 weeks’ gestation were included in the trial.
• Participants were randomly assigned to receive either a single dose of intravenous ferric carboxymaltose (20 mg/kg to a maximum of 1000 mg) or oral ferrous sulphate (200 mg; 65 mg elemental iron) three times daily until 6 weeks postpartum.
• Primary outcomes were maternal anemia (hemoglobin, < 11 g/dL) at 36 weeks’ gestation and preterm birth before 37 weeks’ gestation.
• Secondary outcomes were iron deficiency, iron deficiency anemia, maternal depression, infections, immunization, and breastfeeding practices.
• The trial was conducted in 11 health facilities in Lagos and Kano, Nigeria, with follow-up visits at 2 weeks and 6 weeks postpartum.

TAKEAWAY:

• No significant difference was found in the prevalence of anemia at 36 weeks’ gestation between the intravenous and oral iron groups (58% vs 61%; P = .36).
• Intravenous iron was more effective at reducing iron deficiency (5% vs 16%; P = .0001) and iron deficiency anemia (2% vs 10%; P = .0001) at 36 weeks’ gestation.
• The incidence of preterm birth did not significantly differ between the intravenous and oral iron groups (14% vs 15%; P = .66).
• Intravenous iron led to a higher mean hemoglobin concentration from baseline to 4 weeks in both iron-deficient and non–iron-deficient subgroups.

IN PRACTICE:

“Although the effect on overall anaemia did not differ, intravenous iron reduced the prevalence of iron deficiency to a greater extent than oral iron and was considered to be safe. We recommend that intravenous iron be considered for anaemic pregnant women in Nigeria and similar settings,” wrote the authors of the study.

SOURCE:

This study was led by Bosede B. Afolabi, Department of Obstetrics and Gynaecology, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Nigeria. It was published online in The Lancet Global Health.

LIMITATIONS:

The study’s sample size estimation assumed a 25% rate of preterm births, but the actual rate was only 14.5%, which potentially underpowered the study to measure this outcome. Most participants were enrolled after 20 weeks’ gestation, which limited the ability to explore the effect of treatment duration. The interpretation of postpartum hemorrhage was limited by the use of visual assessment to determine blood loss, which is subjective.

DISCLOSURES:

A coathor, Kristi S. Annerstedt, PhD, reported participation on the ALERT project Data Safety Monitoring Board. Additional disclosures are noted in the original article. The study was supported by grants from the Bill & Melinda Gates Foundation.

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

TOPLINE: 

Intravenous iron reduced iron deficiency more effectively than oral iron, which is often distasteful, among pregnant women in Nigeria. However, no significant difference was found in the prevalence of anemia or preterm birth between the two groups.

METHODOLOGY:

• A total of 1056 pregnant women aged 15-49 years with hemoglobin concentrations 10 g/dL at 20-32 weeks’ gestation were included in the trial.
• Participants were randomly assigned to receive either a single dose of intravenous ferric carboxymaltose (20 mg/kg to a maximum of 1000 mg) or oral ferrous sulphate (200 mg; 65 mg elemental iron) three times daily until 6 weeks postpartum.
• Primary outcomes were maternal anemia (hemoglobin, < 11 g/dL) at 36 weeks’ gestation and preterm birth before 37 weeks’ gestation.
• Secondary outcomes were iron deficiency, iron deficiency anemia, maternal depression, infections, immunization, and breastfeeding practices.
• The trial was conducted in 11 health facilities in Lagos and Kano, Nigeria, with follow-up visits at 2 weeks and 6 weeks postpartum.

TAKEAWAY:

• No significant difference was found in the prevalence of anemia at 36 weeks’ gestation between the intravenous and oral iron groups (58% vs 61%; P = .36).
• Intravenous iron was more effective at reducing iron deficiency (5% vs 16%; P = .0001) and iron deficiency anemia (2% vs 10%; P = .0001) at 36 weeks’ gestation.
• The incidence of preterm birth did not significantly differ between the intravenous and oral iron groups (14% vs 15%; P = .66).
• Intravenous iron led to a higher mean hemoglobin concentration from baseline to 4 weeks in both iron-deficient and non–iron-deficient subgroups.

IN PRACTICE:

“Although the effect on overall anaemia did not differ, intravenous iron reduced the prevalence of iron deficiency to a greater extent than oral iron and was considered to be safe. We recommend that intravenous iron be considered for anaemic pregnant women in Nigeria and similar settings,” wrote the authors of the study.

SOURCE:

This study was led by Bosede B. Afolabi, Department of Obstetrics and Gynaecology, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Nigeria. It was published online in The Lancet Global Health.

LIMITATIONS:

The study’s sample size estimation assumed a 25% rate of preterm births, but the actual rate was only 14.5%, which potentially underpowered the study to measure this outcome. Most participants were enrolled after 20 weeks’ gestation, which limited the ability to explore the effect of treatment duration. The interpretation of postpartum hemorrhage was limited by the use of visual assessment to determine blood loss, which is subjective.

DISCLOSURES:

A coathor, Kristi S. Annerstedt, PhD, reported participation on the ALERT project Data Safety Monitoring Board. Additional disclosures are noted in the original article. The study was supported by grants from the Bill & Melinda Gates Foundation.

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

TOPLINE: 

Intravenous iron reduced iron deficiency more effectively than oral iron, which is often distasteful, among pregnant women in Nigeria. However, no significant difference was found in the prevalence of anemia or preterm birth between the two groups.

METHODOLOGY:

• A total of 1056 pregnant women aged 15-49 years with hemoglobin concentrations 10 g/dL at 20-32 weeks’ gestation were included in the trial.
• Participants were randomly assigned to receive either a single dose of intravenous ferric carboxymaltose (20 mg/kg to a maximum of 1000 mg) or oral ferrous sulphate (200 mg; 65 mg elemental iron) three times daily until 6 weeks postpartum.
• Primary outcomes were maternal anemia (hemoglobin, < 11 g/dL) at 36 weeks’ gestation and preterm birth before 37 weeks’ gestation.
• Secondary outcomes were iron deficiency, iron deficiency anemia, maternal depression, infections, immunization, and breastfeeding practices.
• The trial was conducted in 11 health facilities in Lagos and Kano, Nigeria, with follow-up visits at 2 weeks and 6 weeks postpartum.

TAKEAWAY:

• No significant difference was found in the prevalence of anemia at 36 weeks’ gestation between the intravenous and oral iron groups (58% vs 61%; P = .36).
• Intravenous iron was more effective at reducing iron deficiency (5% vs 16%; P = .0001) and iron deficiency anemia (2% vs 10%; P = .0001) at 36 weeks’ gestation.
• The incidence of preterm birth did not significantly differ between the intravenous and oral iron groups (14% vs 15%; P = .66).
• Intravenous iron led to a higher mean hemoglobin concentration from baseline to 4 weeks in both iron-deficient and non–iron-deficient subgroups.

IN PRACTICE:

“Although the effect on overall anaemia did not differ, intravenous iron reduced the prevalence of iron deficiency to a greater extent than oral iron and was considered to be safe. We recommend that intravenous iron be considered for anaemic pregnant women in Nigeria and similar settings,” wrote the authors of the study.

SOURCE:

This study was led by Bosede B. Afolabi, Department of Obstetrics and Gynaecology, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Nigeria. It was published online in The Lancet Global Health.

LIMITATIONS:

The study’s sample size estimation assumed a 25% rate of preterm births, but the actual rate was only 14.5%, which potentially underpowered the study to measure this outcome. Most participants were enrolled after 20 weeks’ gestation, which limited the ability to explore the effect of treatment duration. The interpretation of postpartum hemorrhage was limited by the use of visual assessment to determine blood loss, which is subjective.

DISCLOSURES:

A coathor, Kristi S. Annerstedt, PhD, reported participation on the ALERT project Data Safety Monitoring Board. Additional disclosures are noted in the original article. The study was supported by grants from the Bill & Melinda Gates Foundation.

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

Three different definitions of nonanemic iron deficiency (ID), a common disorder causing substantial morbidity in women, were significantly associated with different population prevalence estimates, a data analysis of the cross-sectional Hemochromatosis and Iron Overload Screening Study (HEIRS) study found.

These differences held, regardless of self-reported age, pregnancy, or race and ethnicity, according to HEIRS researchers led by James C. Barton, MD, professor of hematology at the University of Alabama at Birmingham.

“Using higher serum ferritin thresholds to define ID could lead to diagnosis and treatment of more women with ID and greater reduction of related morbidity,” the investigators wrote. The study was published in JAMA Network Open.

The authors noted that ID affects about 2 billion people worldwide, mainly women and children, increasing risks of fatigue, impaired muscular performance, cold intolerance, mucosal and epithelial abnormalities, pica, disturbances of menstruation, and adverse pregnancy outcomes.

Manifestations of ID, including anemia, are less prevalent or less severe in adults with higher serum ferritin (SF), and the three definitions correspond, in sequence, to ID of increasing prevalence and decreasing severity, they explained.
 

The Study

HEIRS conducted multiethnic, primary care–based screening for iron disorders during 2001-2003 at four field centers in the United States and one in Canada at primary care venues.

In data for the current study analyzed from June to December, 2023, the three ID definitions were: combined transferrin saturation less than 10% and SF less than 15 ng/mL (HEIRS); SF less than 15 ng/mL (World Health Organization [WHO]); and SF less than 25 ng/mL, the threshold for ID-deficient erythropoiesis [IDE).

Among the cohort’s 62,685 women (mean age, 49.58 years, 27,072 White, 17,272 Black), the estimated prevalence of ID emerged as follows across the different definitions:

• 1957 (3.12%) according to HEIRS
• 4659 (7.43%) according to WHO
• 9611 (15.33%) according to IDE

Those figures translated to an increased relative ID prevalence of 2.4-fold (95% CI, 2.3-2.5; P < .001) according to the WHO standard and 4.9-fold (95% CI, 4.7-5.2; P < .001) according IDEs.

In addition, prevalence was higher in younger women, and within each racial and ethnic subgroup of participants aged 25-54 years, prevalence rose significantly from the HEIRS definition to the WHO and IDE definitions.

Notably, ID was significantly higher among Black and Hispanic participants than Asian and White participants.

An accompanying editorial pointed to gender-based health equity issues raised by the HEIRS analysis and argued that a similar passive acceptance of laboratory definitions of a debilitating but correctable condition in White males would be “frankly unimaginable.”

“Iron deficiency is the leading cause of years lived with disability among women of reproductive age,” wrote hematologist Michelle Sholzberg, MDCM, MSc, and Grace H. Tang, MSc, of St. Michael’s Hospital in Toronto, Canada. “It is a factor clearly associated with maternal death and morbidity (including diminished IQ), and it is correctable, and, thus, unnecessary, in high-income, middle-income, and low-income geographic settings.”

The authors listed no specific funding for this analysis of HEIRS data. Dr. Barton reported contracts from the National Institutes of Health, National Human Genome Research Institute, outside of the submitted work. A coauthor reported grants from the National Heart, Lung, and Blood Institute and the National Human Genome Research Institute outside of the submitted work. Dr. Sholzberg reported unrestricted research funding to her institution from Octapharma and Pfizer and speakers’ honoraria from Takeda, Sobi, and Medison outside of the submitted work.

Three different definitions of nonanemic iron deficiency (ID), a common disorder causing substantial morbidity in women, were significantly associated with different population prevalence estimates, a data analysis of the cross-sectional Hemochromatosis and Iron Overload Screening Study (HEIRS) study found.

These differences held, regardless of self-reported age, pregnancy, or race and ethnicity, according to HEIRS researchers led by James C. Barton, MD, professor of hematology at the University of Alabama at Birmingham.

“Using higher serum ferritin thresholds to define ID could lead to diagnosis and treatment of more women with ID and greater reduction of related morbidity,” the investigators wrote. The study was published in JAMA Network Open.

The authors noted that ID affects about 2 billion people worldwide, mainly women and children, increasing risks of fatigue, impaired muscular performance, cold intolerance, mucosal and epithelial abnormalities, pica, disturbances of menstruation, and adverse pregnancy outcomes.

Manifestations of ID, including anemia, are less prevalent or less severe in adults with higher serum ferritin (SF), and the three definitions correspond, in sequence, to ID of increasing prevalence and decreasing severity, they explained.
 

The Study

HEIRS conducted multiethnic, primary care–based screening for iron disorders during 2001-2003 at four field centers in the United States and one in Canada at primary care venues.

In data for the current study analyzed from June to December, 2023, the three ID definitions were: combined transferrin saturation less than 10% and SF less than 15 ng/mL (HEIRS); SF less than 15 ng/mL (World Health Organization [WHO]); and SF less than 25 ng/mL, the threshold for ID-deficient erythropoiesis [IDE).

Among the cohort’s 62,685 women (mean age, 49.58 years, 27,072 White, 17,272 Black), the estimated prevalence of ID emerged as follows across the different definitions:

• 1957 (3.12%) according to HEIRS
• 4659 (7.43%) according to WHO
• 9611 (15.33%) according to IDE

Those figures translated to an increased relative ID prevalence of 2.4-fold (95% CI, 2.3-2.5; P < .001) according to the WHO standard and 4.9-fold (95% CI, 4.7-5.2; P < .001) according IDEs.

In addition, prevalence was higher in younger women, and within each racial and ethnic subgroup of participants aged 25-54 years, prevalence rose significantly from the HEIRS definition to the WHO and IDE definitions.

Notably, ID was significantly higher among Black and Hispanic participants than Asian and White participants.

An accompanying editorial pointed to gender-based health equity issues raised by the HEIRS analysis and argued that a similar passive acceptance of laboratory definitions of a debilitating but correctable condition in White males would be “frankly unimaginable.”

“Iron deficiency is the leading cause of years lived with disability among women of reproductive age,” wrote hematologist Michelle Sholzberg, MDCM, MSc, and Grace H. Tang, MSc, of St. Michael’s Hospital in Toronto, Canada. “It is a factor clearly associated with maternal death and morbidity (including diminished IQ), and it is correctable, and, thus, unnecessary, in high-income, middle-income, and low-income geographic settings.”

The authors listed no specific funding for this analysis of HEIRS data. Dr. Barton reported contracts from the National Institutes of Health, National Human Genome Research Institute, outside of the submitted work. A coauthor reported grants from the National Heart, Lung, and Blood Institute and the National Human Genome Research Institute outside of the submitted work. Dr. Sholzberg reported unrestricted research funding to her institution from Octapharma and Pfizer and speakers’ honoraria from Takeda, Sobi, and Medison outside of the submitted work.

Three different definitions of nonanemic iron deficiency (ID), a common disorder causing substantial morbidity in women, were significantly associated with different population prevalence estimates, a data analysis of the cross-sectional Hemochromatosis and Iron Overload Screening Study (HEIRS) study found.

These differences held, regardless of self-reported age, pregnancy, or race and ethnicity, according to HEIRS researchers led by James C. Barton, MD, professor of hematology at the University of Alabama at Birmingham.

“Using higher serum ferritin thresholds to define ID could lead to diagnosis and treatment of more women with ID and greater reduction of related morbidity,” the investigators wrote. The study was published in JAMA Network Open.

The authors noted that ID affects about 2 billion people worldwide, mainly women and children, increasing risks of fatigue, impaired muscular performance, cold intolerance, mucosal and epithelial abnormalities, pica, disturbances of menstruation, and adverse pregnancy outcomes.

Manifestations of ID, including anemia, are less prevalent or less severe in adults with higher serum ferritin (SF), and the three definitions correspond, in sequence, to ID of increasing prevalence and decreasing severity, they explained.
 

The Study

HEIRS conducted multiethnic, primary care–based screening for iron disorders during 2001-2003 at four field centers in the United States and one in Canada at primary care venues.

In data for the current study analyzed from June to December, 2023, the three ID definitions were: combined transferrin saturation less than 10% and SF less than 15 ng/mL (HEIRS); SF less than 15 ng/mL (World Health Organization [WHO]); and SF less than 25 ng/mL, the threshold for ID-deficient erythropoiesis [IDE).

Among the cohort’s 62,685 women (mean age, 49.58 years, 27,072 White, 17,272 Black), the estimated prevalence of ID emerged as follows across the different definitions:

• 1957 (3.12%) according to HEIRS
• 4659 (7.43%) according to WHO
• 9611 (15.33%) according to IDE

Those figures translated to an increased relative ID prevalence of 2.4-fold (95% CI, 2.3-2.5; P < .001) according to the WHO standard and 4.9-fold (95% CI, 4.7-5.2; P < .001) according IDEs.

In addition, prevalence was higher in younger women, and within each racial and ethnic subgroup of participants aged 25-54 years, prevalence rose significantly from the HEIRS definition to the WHO and IDE definitions.

Notably, ID was significantly higher among Black and Hispanic participants than Asian and White participants.

An accompanying editorial pointed to gender-based health equity issues raised by the HEIRS analysis and argued that a similar passive acceptance of laboratory definitions of a debilitating but correctable condition in White males would be “frankly unimaginable.”

“Iron deficiency is the leading cause of years lived with disability among women of reproductive age,” wrote hematologist Michelle Sholzberg, MDCM, MSc, and Grace H. Tang, MSc, of St. Michael’s Hospital in Toronto, Canada. “It is a factor clearly associated with maternal death and morbidity (including diminished IQ), and it is correctable, and, thus, unnecessary, in high-income, middle-income, and low-income geographic settings.”

The authors listed no specific funding for this analysis of HEIRS data. Dr. Barton reported contracts from the National Institutes of Health, National Human Genome Research Institute, outside of the submitted work. A coauthor reported grants from the National Heart, Lung, and Blood Institute and the National Human Genome Research Institute outside of the submitted work. Dr. Sholzberg reported unrestricted research funding to her institution from Octapharma and Pfizer and speakers’ honoraria from Takeda, Sobi, and Medison outside of the submitted work.

TOPLINE:

Patients with early-onset colorectal cancer (EOCRC) often present with hematochezia or abdominal pain, symptoms frequently overlooked in younger populations, leading to delays in diagnosis of 4-6 months, a new analysis showed.

METHODOLOGY:

• As the number of cases of EOCRC, defined as colorectal cancer (CRC) diagnosed before age 50, continues to rise, early detection has become increasingly important. Improved recognition of presenting signs and symptoms associated with EOCRC could lead to a more timely diagnosis and better clinical outcomes.
• In a systematic review and meta-analysis of 81 studies with 24.9 million EOCRC cases, researchers sought to determine the most common presenting signs and symptoms, their association with EOCRC risk, and the time from presentation to diagnosis.
• Data extraction and quality assessment were performed independently in duplicate using PRISMA guidelines, and Joanna Briggs Institute critical appraisal tools were used to measure the risk of bias.

TAKEAWAY:

• Hematochezia was the most common presenting sign/symptom, with a pooled prevalence of 45%, followed by abdominal pain, with a pooled prevalence of 40%.
• Altered bowel habits, which included constipation, diarrhea, and alternating bowel habits, were the third most common presenting sign/symptom (pooled prevalence of 27%), followed by unexplained weight loss (pooled prevalence of 17%).
• The likelihood of EOCRC was estimated to be fivefold to 54-fold higher with hematochezia and 1.3-fold to sixfold higher with abdominal pain.
• The mean time from sign or symptom onset to EOCRC diagnosis was 6.4 months (range, 1.8-13.7 months).

IN PRACTICE:

“These findings and the increasing risk of CRC in individuals younger than 50 years highlight the urgent need to educate clinicians and patients about these signs and symptoms to ensure that diagnostic workup and resolution are not delayed. Adapting current clinical practice to identify and address these signs and symptoms through careful clinical triage and follow-up could help limit morbidity and mortality associated with EOCRC,” the authors wrote.

SOURCE:

The study, with Joshua Demb, PhD, MPH, division of gastroenterology, department of medicine, University of California, San Diego, was published online May 24 in JAMA Network Open.

LIMITATIONS:

Significant heterogeneity across studies affected the ability to meta-analyze some results. The cross-sectional data limited the ability to stratify by age, sex, race and ethnicity, or genetic ancestry. It was not possible to evaluate the impact of time to diagnosis on CRC outcomes due to a limited number of studies answering this question. Researchers were unable to examine the constellation of signs and symptoms because they lacked individual-level data from each study.

DISCLOSURES:

The authors disclosed no relevant conflicts of interest. No specific funding was disclosed.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with early-onset colorectal cancer (EOCRC) often present with hematochezia or abdominal pain, symptoms frequently overlooked in younger populations, leading to delays in diagnosis of 4-6 months, a new analysis showed.

METHODOLOGY:

• As the number of cases of EOCRC, defined as colorectal cancer (CRC) diagnosed before age 50, continues to rise, early detection has become increasingly important. Improved recognition of presenting signs and symptoms associated with EOCRC could lead to a more timely diagnosis and better clinical outcomes.
• In a systematic review and meta-analysis of 81 studies with 24.9 million EOCRC cases, researchers sought to determine the most common presenting signs and symptoms, their association with EOCRC risk, and the time from presentation to diagnosis.
• Data extraction and quality assessment were performed independently in duplicate using PRISMA guidelines, and Joanna Briggs Institute critical appraisal tools were used to measure the risk of bias.

TAKEAWAY:

• Hematochezia was the most common presenting sign/symptom, with a pooled prevalence of 45%, followed by abdominal pain, with a pooled prevalence of 40%.
• Altered bowel habits, which included constipation, diarrhea, and alternating bowel habits, were the third most common presenting sign/symptom (pooled prevalence of 27%), followed by unexplained weight loss (pooled prevalence of 17%).
• The likelihood of EOCRC was estimated to be fivefold to 54-fold higher with hematochezia and 1.3-fold to sixfold higher with abdominal pain.
• The mean time from sign or symptom onset to EOCRC diagnosis was 6.4 months (range, 1.8-13.7 months).

IN PRACTICE:

“These findings and the increasing risk of CRC in individuals younger than 50 years highlight the urgent need to educate clinicians and patients about these signs and symptoms to ensure that diagnostic workup and resolution are not delayed. Adapting current clinical practice to identify and address these signs and symptoms through careful clinical triage and follow-up could help limit morbidity and mortality associated with EOCRC,” the authors wrote.

SOURCE:

The study, with Joshua Demb, PhD, MPH, division of gastroenterology, department of medicine, University of California, San Diego, was published online May 24 in JAMA Network Open.

LIMITATIONS:

Significant heterogeneity across studies affected the ability to meta-analyze some results. The cross-sectional data limited the ability to stratify by age, sex, race and ethnicity, or genetic ancestry. It was not possible to evaluate the impact of time to diagnosis on CRC outcomes due to a limited number of studies answering this question. Researchers were unable to examine the constellation of signs and symptoms because they lacked individual-level data from each study.

DISCLOSURES:

The authors disclosed no relevant conflicts of interest. No specific funding was disclosed.
 

A version of this article appeared on Medscape.com.

TOPLINE:

Patients with early-onset colorectal cancer (EOCRC) often present with hematochezia or abdominal pain, symptoms frequently overlooked in younger populations, leading to delays in diagnosis of 4-6 months, a new analysis showed.

METHODOLOGY:

• As the number of cases of EOCRC, defined as colorectal cancer (CRC) diagnosed before age 50, continues to rise, early detection has become increasingly important. Improved recognition of presenting signs and symptoms associated with EOCRC could lead to a more timely diagnosis and better clinical outcomes.
• In a systematic review and meta-analysis of 81 studies with 24.9 million EOCRC cases, researchers sought to determine the most common presenting signs and symptoms, their association with EOCRC risk, and the time from presentation to diagnosis.
• Data extraction and quality assessment were performed independently in duplicate using PRISMA guidelines, and Joanna Briggs Institute critical appraisal tools were used to measure the risk of bias.

TAKEAWAY:

• Hematochezia was the most common presenting sign/symptom, with a pooled prevalence of 45%, followed by abdominal pain, with a pooled prevalence of 40%.
• Altered bowel habits, which included constipation, diarrhea, and alternating bowel habits, were the third most common presenting sign/symptom (pooled prevalence of 27%), followed by unexplained weight loss (pooled prevalence of 17%).
• The likelihood of EOCRC was estimated to be fivefold to 54-fold higher with hematochezia and 1.3-fold to sixfold higher with abdominal pain.
• The mean time from sign or symptom onset to EOCRC diagnosis was 6.4 months (range, 1.8-13.7 months).

IN PRACTICE:

“These findings and the increasing risk of CRC in individuals younger than 50 years highlight the urgent need to educate clinicians and patients about these signs and symptoms to ensure that diagnostic workup and resolution are not delayed. Adapting current clinical practice to identify and address these signs and symptoms through careful clinical triage and follow-up could help limit morbidity and mortality associated with EOCRC,” the authors wrote.

SOURCE:

The study, with Joshua Demb, PhD, MPH, division of gastroenterology, department of medicine, University of California, San Diego, was published online May 24 in JAMA Network Open.

LIMITATIONS:

Significant heterogeneity across studies affected the ability to meta-analyze some results. The cross-sectional data limited the ability to stratify by age, sex, race and ethnicity, or genetic ancestry. It was not possible to evaluate the impact of time to diagnosis on CRC outcomes due to a limited number of studies answering this question. Researchers were unable to examine the constellation of signs and symptoms because they lacked individual-level data from each study.

DISCLOSURES:

The authors disclosed no relevant conflicts of interest. No specific funding was disclosed.
 

A version of this article appeared on Medscape.com.