Celiac disease is a chronic disease of the small intestine, which develops as a result of the ingestion of certain plant proteins: gluten.
The cause of the disease is the alcohol-soluble component of gluten in wheat, gliadin.
In addition, similar proteins in rye, barley and presumably oats also increase inflammation.
Celiac disease is treated by following a gluten-free diet. If this is followed completely, the symptoms will disappear.