Coeliac disease, also spelled celiac, is an autoimmune disease that affects the small intestine.
A reaction to protein found in wheat products causes the intestine to flatten so that nutrients are unable to be absorbed. Although health experts believe the disease is not that widespread, it is hard to identify because the symptoms vary widely. As well, this is one disease that doesn't involve a lot of treatments.
The only treatment that is available is to adhere to a diet of gluten free foods.