Celiac disease is a digestive disorder that damages your small intestine and keeps it from absorbing the nutrients in food. A protein found in wheat, barley, and rye called gluten is what causes the damage to the intestinal tract.

Your bile and pancreative juices flow through a duct that is opened and closed by a valve called the sphincter of Oddi. If this valve goes into spasm, you end up with severe belly pain.

Portal hypertension is high blood pressure of the portal vein, which is in your abdomen (belly). It collects nutrient-rich blood from your intestines and carries it to the liver for cleaning.

Pancreas transplantation is a type of surgery in which you receive a healthy donor pancreas. It is an option for some people with type 1 diabetes.

Absence seizures are a type of epilepsy that most often occur in children. Read on for details about this condition.

Anemia is when your blood has lower levels of red blood cells, or your red blood cells don't have enough of the protein hemoglobin. Hemoglobin carries oxygen, which is sent around the body through blood. Anemia may occur after weight-loss surgery (bariatric surgery).

Efferent loop syndrome is one of two "loop syndromes" that can happen after some types of gastric surgery. Read about its causes, symptoms, diagnosis, and treatment.

Afferent loop syndrome is a complication of certain types of stomach surgery.

One risk of gastric bypass surgery is that the anastomosis, the new connection created in your intestines during the bypass surgery, will leak. Leaking of digestive juices and partially digested food through an anastomosis is one of the most serious complications after bypass surgery.

This surgery takes out the part of your stomach that curves outward, called the fundus. After the fundus is taken out, your surgeon will close the rest of your stomach into a tube shape that looks like a banana.