Gastroenterology deals with the diseases related to the digestive system. This branch of medicine studies the functioning of the different organs of the gastrointestinal tract in the human body including small intestine, stomach, pancreas, colon, rectum, esophagus, liver, gallbladder, and bile duct. Physicians who specialize in gastroenterology, offering treatment of disorders of the organs from mouth to the anus are known as gastroenterologists. These practitioners understand the movement of material through the stomach to the digestion stage, absorption of nutrients, removal of toxic substance, and functioning of the liver as a digestive organ.
To practice as a gastroenterologist, the specialist needs to complete pre-medical and medical education and training of eight years. Along with this, the physician must attain year-long internship, three years of residency program covering internal medicine, and fellowship of two years in gastroenterology.