Can I eat watermelon with ulcerative colitis?
During a flare: CautionIn remission: Caution
Watermelon flesh is soft and low in insoluble fiber, which is helpful, but it's high enough in excess fructose that a large portion is considered high-FODMAP; big servings can pull water into the bowel and worsen bloating or loose stools in sensitive people.
During a flare
Small portions of seedless, deseeded watermelon are often tolerated as a soft flare food, but large servings may aggravate symptoms because of the fructose load.
In remission
Keeping portions moderate (roughly a cup or less) helps avoid the fructose threshold that can trigger gas or loose stools.
Ways to make it gentler
- Remove all seeds
- Stick to smaller portions
Safer swaps
cantaloupe
Sources
- FODMAP food list — Monash University FODMAP
- Food: Your Guide (booklet, ed. 9) — Crohn's & Colitis UK
Last checked 2026-08-12
