Definition of Celiac disease - nutritional considerations:

Celiac disease is an autoimmune disorder passed down through families. When a person with celiac disease eats or drinks anything containing gluten, a protein found in wheat, barley, rye, or sometimes oats (including medications), the immune system responds by damaging the lining of the intestinal tract. This damage affects the body's ability to absorb nutrients.

For specific information about the disease (including symptoms and treatment), seeceliac disease.

A gluten-free diet, when followed carefully, helps prevent symptoms of the disease.