Question: I keep reading so much about gluten and celiac disease. How does one get diagnosed with celiac disease?

Dr. Hibberd's answer:
Celiac disease is a digestive condition triggered by consumption of the protein gluten, which is primarily found in bread, pasta, cookies, pizza crust, and many other foods containing wheat, barley, or rye. People with celiac disease who eat foods containing gluten experience an immune reaction in their small intestines, causing damage to the inner surface of the small intestine and inability to absorb certain nutrients. This condition can cause abdominal pain and diarrhea. Eventually, the decreased absorption of nutrients (malabsorption) that occurs with celiac disease can cause vitamin deficiencies that deprive your brain, peripheral nervous system, bones, liver, and other organs of vital nourishment.
Blood tests can detect higher than normal levels of certain antibodies (anti-endomysium and anti-tissue transglutaminase) in people with celiac disease. To confirm the diagnosis, your doctor may want to examine a small portion of intestinal tissue to check for damage, or, your doctor may ask you to swallow a pill-sized capsule that contains a tiny camera. As the camera travels through your digestive tract, it takes thousands of images and sends them to a recorder you wear on a belt. Your doctor can review these pictures. The capsule leaves your body in your stool and can be flushed down the toilet.