@valarino Is your doctor a gastroenterologist? If they took biopsy samples during your colonoscopy, it would be good to get a copy of that report. My colon looked good (at least less wrinkly than me) but the microscopic analysis showed collagenous colitis which is mostly watery diarrhea. Consider trying gluten free for a few weeks and see if that helps. Even if someone doesn't have celiac, they can be intolerant. Read labels, gluten from wheat, rye, and barley (including malt) is common. Most soy sauce is mostly fermented wheat, so gluten. Corn tortillas/tacos, rice, labeled GF pasta, and a lot of soups are usually GF (don't know if you cook). Adding bulk can help too, such as psyllium husk (active ingredient in metamucil), but it is dependent on the brand of IBS or IBD someone has. https://www.cedars-sinai.org/newsroom/gluten-free-living-gluten-crohns-and-ulcerative-colitis/ https://my.clevelandclinic.org/health/diseases/9357-crohns-disease