<unk>  is a digestive disease that damages the small intestine and interferes with absorption of nutrients from food. People who have<unk>  cannot tolerate gluten, a protein in wheat, rye, and barley. Gluten is found mainly in foods but may also be found in everyday products such as medications, vitamins, and lip balms. When people with<unk>  eat foods or use products containing gluten, their immune system responds by damaging or destroying villi (the tiny, finger-like protrusions lining the small intestine). Villi normally allow nutrients from food to be absorbed through the walls of the small intestine into the bloodstream. Without healthy villi, a person becomes malnourished, no matter how much food eats.<unk>  is both a malabsorption disease (nutrients are not absorbed properly), and an abnormal immune reaction to gluten.<unk>  is also known as<unk>  sprue, nontropical sprue, and gluten-sensitive enteropathy.<unk>  is genetic, means it runs in families. Sometimes the disease is triggered (or becomes active for the first time) after surgery, pregnancy, childbirth, viral infection, or severe emotional stress.
Celiac disease
Tropical sprue
Crohn's disease
Autoimmune enteropathy
Inflammatory bowel disease
Gastroesophageal reflux disease
Irritable bowel syndrome
Gastric lymphoma