Can I eat beans with ulcerative colitis?
Beans are rich in fermentable oligosaccharides (GOS), a FODMAP type that can cause gas and bloating in sensitive guts, plus fiber that can be bulky during active disease; at the same time, UK patient guidance calls beans, peas, and lentils healthy protein alternatives to red or processed meat and does not recommend cutting fiber unless it triggers symptoms or there's a stricture. Canned/well-cooked, drained beans and smaller portions generally leach out and reduce some of the FODMAP load compared to larger servings of dried beans.
During a flare
Beans can worsen gas, bloating, or urgency for some people during a flare; if tried, start with small, well-cooked or canned-and-drained portions rather than large servings.
In remission
Reintroduce gradually in small portions and track tolerance; some people in remission do fine with regular beans while others need to keep portions modest long-term.
Ways to make it gentler
- Use canned beans, rinsed and drained, or cook dried beans until very soft
- Start with small (roughly 1/4 cup) portions and build up as tolerated
Safer swaps
tofu · eggs · lean meat or fish
Sources
- Food and Crohn's or Colitis — Crohn's & Colitis UK
- Including legumes on a low FODMAP diet — Monash University FODMAP
Last checked 2026-08-12
