Gastrointestinal diseases are health conditions that affect your gastrointestinal (GI) tract. Your GI tract is the path food takes through your digestive system — from your mouth to your rectum.

Mar 26, 2026 · Gastrointestinal (GI) diseases affect the digestive system and cause symptoms like heartburn and diarrhea.

ACG Case Reports Journal is a peer-reviewed, open-access online journal publishing gastroenterology and hepatology case reports. The journal is edited by a team of GI fellows.

The digestive system consists of the gastrointestinal tract, sometimes referred to as the GI tract, which includes the esophagus, stomach, small intestine and large intestine as well as the accessory organs …

We provide gastroenterology care for all types of GI conditions, from inflammatory bowel disease and liver disorders to all forms of gastrointestinal cancers. We are one of the nation’s top-ranked …

Abdominal pain Rectal pain or bleeding Some upper and lower GI symptoms result from physiologic illness or represent a disorder of gut-brain interaction (previously called functional gastrointestinal …

Nov 24, 2025 · Learn about digestive disorders and how your gastrointestinal (GI) system works. Find out what tests you need in case you sense a problem.

A gastrointestinal (GI) disorder is any condition that affects your digestive tract, from the esophagus to the rectum. In the United States alone, 60 to 70 million people are affected by digestive diseases. …

GI Alliance of Illinois is a leading physician group providing comprehensive digestive health care throughout the state. Our board-certified gastroenterology specialists focus on patient-centered …

Need help treating a digestive condition? Access AGA's free GI clinical guidelines on IBD and bowel disorders, colorectal cancer and more.