Gastroenterologists are able to diagnose a wide variety of conditions that affect the gastrointestinal tract. The gastrointestinal tract is a long, coiled tube that starts at the mouth and ends at the anus. Along the way, it includes the esophagus, stomach, small intestine, large intestine (colon), rectum, and anus. The primary function of the gastrointestinal tract is to digest food and absorb nutrients. A gastroenterologist is an expert in the diagnosis and treatment of gastrointestinal ... [Read More]