A study of 198 adults found that eating more fiber, fruits, vegetables, nuts, and coffee reduces gut inflammation in people with inflammatory bowel disease — but the two main subtypes respond through completely different gut-bacteria pathways, suggesting that diet advice for these conditions should not be one-size-fits-all.
1
Gut microbiome diversity was lowest in Crohn's disease patients and correlated positively with intake of fiber, fruits, vegetables, and nuts across all 198 participants.
2
In Crohn's disease, coffee and whole wheat bread reduced the Harvey-Bradshaw inflammation index through specific bacterial species and their metabolites.
3
In ulcerative colitis, Mediterranean-style diets and fruits lowered C-reactive protein (an inflammation marker) by boosting microbial richness and short-chain fatty acid production — a class of compounds made when bacteria ferment plant fiber.
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