Research shows that 7% of adults with celiac disease have folate deficiency, a serious B vitamin shortage that can cause anemia and nerve damage. According to Gram Research analysis of 825 celiac patients, younger individuals and those with both celiac disease and ulcerative colitis face the highest risk. The deficiency likely stems from intestinal damage that prevents nutrient absorption and gluten-free diets that may lack folate-rich foods.
A new study of 825 people with celiac disease found that 7% had dangerously low folate levels, a B vitamin essential for healthy cells and DNA. Researchers discovered that younger patients and those with celiac disease plus ulcerative colitis were more likely to be folate-deficient. The problem appears to stem from two sources: the damage celiac disease does to the small intestine (making it harder to absorb nutrients) and gluten-free diets that may not contain enough folate-rich foods. According to Gram Research analysis, this finding suggests people with celiac disease may need better screening and guidance about folate-rich foods or supplements.
Key Statistics
A 2026 cross-sectional study of 825 celiac disease patients found that 7% had folate deficiency, with younger patients significantly more affected than older ones.
Among 825 celiac disease patients studied in 2026, those with concurrent ulcerative colitis were 17 times more likely to have folate deficiency (5.2% vs. 0.3%).
Celiac disease patients with folate deficiency were diagnosed with celiac disease 6 years earlier on average (age 28 vs. 34 years) compared to non-deficient patients, suggesting younger patients may face greater nutritional challenges.
The Quick Take
- What they studied: How common is folate deficiency in adults with celiac disease, and which patients are most at risk?
- Who participated: 825 adults (73% women) with celiac disease being treated at a major medical center. Average age was 43 years old.
- Key finding: 7% of celiac disease patients had folate deficiency. Younger patients and those who also had ulcerative colitis were significantly more likely to be deficient.
- What it means for you: If you have celiac disease, especially if you’re younger or have other digestive conditions, ask your doctor about checking your folate levels. You may need to eat more folate-rich foods like leafy greens, beans, and fortified cereals, or take a supplement.
The Research Details
Researchers looked at 825 adults with celiac disease who visited a specialized treatment center. They compared patients who had low folate levels with those who had normal levels, examining differences in age, sex, how severe their intestinal damage was, and what other health conditions they had. Everyone in the study had received counseling about following a gluten-free diet, though the researchers didn’t track how well people actually stuck to it.
This type of study is called ‘cross-sectional,’ which means researchers took a snapshot in time rather than following people over months or years. They looked at medical records and blood test results to find patterns and connections between folate deficiency and other factors.
Understanding who gets folate deficiency helps doctors know which celiac disease patients need extra attention and screening. Folate is critical for making new cells and DNA, so deficiency can cause serious problems like anemia and nerve damage if left untreated.
This study has good strengths: a large sample size (825 patients) and detailed medical records from a specialized center. However, it only looked at one hospital, so results might not apply everywhere. The researchers also didn’t measure how well patients followed their gluten-free diets, which could affect the results. The study was a snapshot in time rather than following people over years, so we can’t be completely sure about cause-and-effect relationships.
What the Results Show
Among the 825 celiac disease patients studied, 58 people (7%) had folate deficiency. This is notably higher than the general population, suggesting celiac disease significantly increases risk.
Patients with folate deficiency were younger on average, 37 years old at the time of testing compared to 44 years old for those without deficiency. They were also younger when first diagnosed with celiac disease (28 years vs. 34 years). This age difference was statistically significant, meaning it wasn’t due to chance.
The most striking finding was that ulcerative colitis (an inflammatory bowel condition) was much more common in the folate-deficient group: 5.2% had it compared to only 0.3% in the non-deficient group. Interestingly, hypothyroidism (an underactive thyroid) was less common in the folate-deficient group (6.9% vs. 19%), though researchers didn’t explain why.
The time between celiac disease diagnosis and folate testing was similar in both groups (about 8-9 years), suggesting the deficiency wasn’t simply a matter of having the disease longer. This hints that other factors, like diet choices, supplement use, or the presence of other conditions, play a bigger role than disease duration alone.
This study adds important information to existing research showing that celiac disease patients are at higher risk for nutrient deficiencies. The 7% prevalence rate is consistent with previous smaller studies, but this research provides more detail about which patients are most vulnerable. The connection between folate deficiency and ulcerative colitis in celiac patients appears to be a newer finding that needs further investigation.
The study only included patients from one specialized medical center, so results may not apply to all celiac disease patients everywhere. The researchers didn’t measure how well patients actually followed their gluten-free diets, which is a major limitation since diet directly affects folate intake. They also didn’t track supplement use, which could explain some of the age differences. Finally, because this was a snapshot study rather than following people over time, we can’t prove that celiac disease causes the folate deficiency, only that they’re connected.
The Bottom Line
If you have celiac disease, ask your doctor about checking your folate levels, especially if you’re younger or have other digestive conditions like ulcerative colitis. Eat more folate-rich foods including spinach, kale, lentils, chickpeas, and fortified gluten-free grains. Consider a B-complex supplement if your doctor recommends it. This recommendation has moderate confidence based on this study’s findings.
Anyone with celiac disease should be aware of folate deficiency risk. This is especially important for younger patients and those with other autoimmune or inflammatory conditions. People following gluten-free diets should ensure they’re eating enough folate-rich foods. Healthcare providers treating celiac disease should consider routine folate screening.
Folate levels can improve within weeks of increasing intake or starting supplements, but it may take 2-3 months to feel the full benefits like improved energy and reduced brain fog. Consistent dietary changes or supplementation are needed to maintain healthy levels.
Frequently Asked Questions
Can celiac disease cause folate deficiency?
Yes. Celiac disease damages the small intestine’s ability to absorb nutrients like folate. Additionally, gluten-free diets may contain fewer folate-rich foods. Research shows 7% of celiac patients develop folate deficiency, which can cause anemia and fatigue.
Who is most at risk for folate deficiency with celiac disease?
Younger celiac disease patients and those with ulcerative colitis face higher risk. A 2026 study found folate-deficient patients averaged 37 years old versus 44 years for non-deficient patients, and ulcerative colitis was 17 times more common in the deficient group.
What foods have folate for people on gluten-free diets?
Excellent gluten-free folate sources include spinach, kale, lentils, chickpeas, asparagus, and fortified gluten-free cereals and breads. Aim for 400 micrograms daily. Consult your doctor about supplements if dietary intake is insufficient.
How often should celiac disease patients get folate levels checked?
Annual folate screening is reasonable for celiac disease patients, especially younger individuals or those with other digestive conditions. More frequent testing may be needed if deficiency is detected. Discuss screening frequency with your healthcare provider.
Can folate supplements help celiac disease patients?
Yes, folate supplements can correct deficiency when dietary changes aren’t sufficient. A standard dose is 400-800 micrograms daily. Work with your doctor to determine if supplementation is appropriate and monitor blood levels to ensure adequate correction.
Want to Apply This Research?
- Log folate-rich foods daily (spinach, lentils, asparagus, fortified cereals) and track folate supplement intake if prescribed. Set a reminder for annual folate blood tests.
- Add one folate-rich food to each meal: spinach in breakfast eggs, lentil soup for lunch, roasted asparagus with dinner. Use the app to find gluten-free folate sources and track intake toward a daily goal of 400 micrograms.
- Track energy levels, mood, and any symptoms of anemia (fatigue, shortness of breath) weekly. Schedule annual folate blood tests and log results in the app to monitor trends over time.
This article summarizes research findings and is not medical advice. Folate deficiency can cause serious health problems and requires professional diagnosis and treatment. If you have celiac disease or suspect folate deficiency, consult your healthcare provider before making dietary changes or starting supplements. Blood tests are necessary to confirm deficiency. Individual nutritional needs vary based on age, health status, and other medications. Always work with your doctor or registered dietitian when managing celiac disease and nutritional deficiencies.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
