Gastroenterology is the branch of medicine focused on the digestive system (esophagus, stomach, intestines, liver, pancreas, etc.) and its disorders, diagnosing and treating issues from heartburn and IBS to liver disease, often using procedures like endoscopy (colonoscopy, gastroscopy) to manage conditions affecting nutrient absorption, bowel function, and waste removal. Gastroenterology is the branch of medicine focused on the digestive system (esophagus, stomach, intestines, liver, pancreas, etc.) and its disorders, diagnosing and treatinGastroenterology is the branch of medicine focused on the digestive system (esophagus, stomach, intestines, liver, pancreas, etc.) and its disorders, diagnosing and treating issues from heartburn and IBS to liver disease, often using procedures like endoscopy (colonoscopy, gastroscopy) to manage conditions affecting nutrient absorption, bowel function, and waste removalg issues from heartburn and IBS to liver disease, often using procedures like endoscopy (colonoscopy, gastroscopy).