Colonoscopy The most common preparation for a colonoscopy is a clear liquid diet accompanied by laxatives. However, this may not be the most effective preparation. A 2015 guideline issued by The Standards of Practice Committee of the American Society for Gastrointestinal Endoscopy recommends using a low-residue diet instead, also accompanied by laxatives, because of evidence that it performs at least as well for bowel cleansing and is associated with better patient satisfaction. Crohn's Disease Various guides to low-fiber diets suggest their use for short-term management of Crohn's disease, but there is little research to support this. A 2016 review of the research found that a semi-elemental whey hydrolyzed protein (WHP) diet is superior for treatment of Crohn's disease. Diverticulitis While a low-fiber diet is generally used for acute diverticulitis, the NIH guidelines recommend a high-fiber diet for patients with diverticulosis (a condition that may lead to diverticulitis). A Mayo Clinic review from 2011 showed that a high-fiber diet can prevent diverticular disease. Aviation In preparation for long-duration toiletless military flights, the crew is sometimes instructed to have a low-residue meal as their last meal before the flight. For example, this was the case with Blackbird pilots.
Low-fiber/low-residue diet
Low-FODMAP diet
Gluten-free diet
Specific carbohydrate diet
Plant-based diet
Macrobiotic diet
Lectin-free diet
Low-carbohydrate diet