The esophagus, stomach, small intestine, colon, and rectum, as well as the pancreas, gallbladder, bile ducts, and liver, are all studied in gastroenterology. It entails a thorough understanding of the gastrointestinal organs' normal function (physiology), which includes material movement through the stomach and intestine (motility), digestion and absorption of nutrients into the body, waste removal from the system, and the liver's role as a digestive organ. Colon polyps and cancer, hepatitis, gastroesophageal reflux disease (heartburn), peptic ulcer disease, colitis, gallbladder and biliary tract illness, nutritional issues, Irritable Bowel Syndrome (IBS), and pancreatitis are all included. In essence, Gastroenterology is the study of all normal and abnormal activities of the digestive organs.