Harvard Health Tips

Celiac disease

In people with celiac disease, a protein in wheat, barley, and rye called gluten triggers the immune system to attack the villi. These are finger-like projections that carpet the inside of the small intestine. The classic symptoms of celiac disease include abdominal pain, bloating, and diarrhea. Sensitivity to gluten is a lifelong problem, so anyone with celiac disease, regardless of symptoms, should keep to a strict gluten-free diet. …

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