Diet and Ulcerative Colitis: What the Evidence Shows - Medscape

What To Know

This Medscape commentary reviews evidence on diet for ulcerative colitis, focusing on three areas: inducing remission in mild-to-moderate disease, adjunctive therapy in more severe disease, and prevention of relapse.

The author summarizes randomized and pilot studies that tested Mediterranean-type diets, a low-FODMAP/Mediterranean hybrid with partial enteral nutrition, a low-fat high-fiber intervention, and an ulcerative-colitis exclusion diet, noting effects on clinical symptoms, quality of life, fecal calprotectin, short-chain fatty acids, and microbiome composition.

Takeaways: - Several small trials link Mediterranean-style diets (more fruits, vegetables, fiber; less red/processed meat and ultraprocessed foods) with improved symptoms, quality of life, and some biomarker changes in mild-to-moderate ulcerative colitis.

- Exclusion-style diets and partial enteral nutrition showed clinical responses in small, open-label studies, but sample sizes and study designs limit certainty. - The commentary emphasizes practical, culturally adaptable dietary recommendations rather than one prescriptive plan; diet is framed as adjunctive to medical care rather than a replacement.