Celiac disease is a type of autoimmune and digestive disorder, which can cause damage to small intestine. The symptoms include anemia, diarrhea, growth issues, gas and bloating. The main cause of this disease is a protein named gluten, which is primarily found in rye, wheat and barley. Repeated consumption of these food items can lead to damage to the lining of the small intestine, preventing the absorption of nutrients. A variety of specific markers present in the blood are helpful in diagnosing this condition. Celiac disease might lead to other health complications such as infertility, malnutrition, intestinal cancer, rheumatoid arthritis, type 1 diabetes and osteoporosis. The only possible treatment of the disease is consuming a gluten-free diet, and avoiding foods such as barley, rye and wheat. This book unravels the recent studies on the symptoms, complications and treatment of celiac disease. It is a vital tool for all researching and studying this disease.