Diseases of the stomach and bowel can affect people of all ages and cause symptoms that impact digestion, nutrient absorption, and overall well-being. Common symptoms that may indicate gastrointestinal issues include abdominal pain, bloating, diarrhea, constipation, heartburn, and blood in the stool. Common conditions in this area include IBS (irritable bowel syndrome), Crohn's disease, ulcerative colitis, celiac disease, peptic ulcers, and gastroesophageal reflux disease (GERD). Many of these conditions can be effectively treated through medication, dietary adjustments, or other treatment methods, especially if detected early.