Bowel disease refers to any medical condition that affects the function or health of the large intestine, rectum and anus. This includes a wide range of conditions such as irritable bowel syndrome (IBS), Crohn's disease, ulcerative colitis, diverticulitis, colon cancer, and many others. These diseases can cause symptoms like abdominal pain, bloating, gas, constipation or diarrhea, weight loss, anemia, and malnutrition among other complications. The exact causes of these conditions vary but may include genetic factors, environmental triggers, immune system dysfunction, and lifestyle choices. Treatment options also depend on the specific condition and can range from medication to surgery or changes in diet and lifestyle.