Is gluten Safe for Inflammatory Bowel Disease (IBD)?
For people with Inflammatory Bowel Disease (IBD), gluten is worth limiting or using with caution during a flare and usually fine in remission. Gluten is a protein found in wheat, barley and rye.
Status for IBD
Why this rating?
Gluten is a protein found in wheat, barley and rye. In celiac disease it must be avoided completely because it damages the gut lining; in other autoimmune and gut conditions, some people report feeling better limiting it, though the evidence is less clear-cut.
People who are sensitive to this ingredient may notice gi. Individual responses vary, so this symptom category does not replace the condition-specific rating above.
gluten and IBD
What this means for inflammatory bowel disease
The National Institute of Diabetes and Digestive and Kidney Diseases says researchers have not found that specific foods cause or worsen Crohn's disease or ulcerative colitis. Some people report feeling better limiting gluten during a flare, and a food diary shared with your doctor is the way to find out whether it applies to you.
Editorial summary
This summary is editorial and is not part of the clinical review. Ratings above are unchanged.
What gluten is
Gluten is a group of proteins found in wheat, barley and rye. The National Institute of Diabetes and Digestive and Kidney Diseases explains that these grains are the natural sources of gluten and that gluten is also added to many other foods and products, which is why reading labels for ingredients made from those grains matters.
Why it matters for celiac disease and beyond
In celiac disease, gluten triggers an immune response that damages the lining of the small intestine, and the treatment is a gluten-free diet that people follow for life. People with celiac disease are also more likely to have other autoimmune conditions, including autoimmune thyroid disease and type 1 diabetes, which is one reason gluten comes up in thyroid and other autoimmune conditions. For people without celiac disease the evidence is far less clear: studies of a gluten-free diet in Hashimoto's thyroiditis have been inconsistent, and our rating reflects that some people report feeling better limiting it, not a proven benefit.
Reading labels
In the United States, a food labeled gluten-free must contain less than 20 parts per million of gluten, and ingredients made from barley, such as malt extract, cannot be used in it. Wheat must be declared on the label, but barley and rye are not required to be flagged in the same way, so the ingredient list matters. The NIDDK also advises people with celiac disease to ask pharmacists about gluten in medicines and supplements, and to contact a manufacturer if they are not sure.
How gluten is rated across conditions
The same ingredient can mean different things depending on the condition. These are the ratings for every condition that has a guide for gluten.
| Condition | During a flare | In remission |
|---|---|---|
| Inflammatory Bowel Disease (IBD) | Limit / Caution | Usually OK |
| Hashimoto's Thyroiditis | Limit / Caution | Usually OK |
| Celiac Disease | Avoid | Avoid |
Other conditions
Sources
Published sources
- Fasano 2012 — literature
Clinical review
Reviewed by Morvarid Nikousokhantayar, MSc Nutrition, Certified Naturopath & Nutritionist — last reviewed September 25, 2026.
This is general dietary information, not medical advice. Talk to your care team about your individual triggers.
Want to check a full product against your conditions?
Scan a barcode with FoodSage to see gluten and every other ingredient checked against Inflammatory Bowel Disease (IBD) and any second condition you set. Learn about FoodSage.
