Colonoscopy, Flexible sigmoidoscopy, Diagnostic endoscopy, Esophagoscopy, Polypectomy, Bravo capsule pH test, Esophagea...l dilation, Celiac disease, Gastroesophageal reflux disease, Irritable bowel syndrome, Lactose intolerance, Pelvic floor defecatory dysfunction, Colon polyps, Ehlers-Danlos syndrome, Helicobacter pylori infection, Peptic ulcer, Diarrhea, Alpha-gal allergy, Gastritis, Constipation, Alpha-1-antitrypsin deficiency, Malabsorption, Esophageal stricture, Fructose intolerance, Bile acid malabsorption