Gastrointestinal cancer refers to a group of cancers that affect the digestive system, including the esophagus, stomach, pancreas, liver, gallbladder, small intestine, and colon. These cancers can develop in various parts of the gastrointestinal tract and may cause symptoms like abdominal pain, weight loss, and changes in bowel habits. Early detection is crucial for effective treatment. Risk factors for gastrointestinal cancer include age, family history, and lifestyle choices such as diet and smoking. Regular screenings and a healthy lifestyle can help reduce the risk. If diagnosed early, many types of gastrointestinal cancer can be treated successfully.