Lactulose May Help IBD by Boosting Natural Hydrogen Production
Lactulose: An indirect antioxidant ameliorating inflammatory bowel disease by increasing hydrogen production
Research hubs: Immune System
- Evidence type
- Review or commentary
- Authors
- Xiao Chen, Qiao Zuo, Yuedong Hai, Xue Jun Sun
- Journal
- Medical Hypotheses
- Year
- 2011
- PMID
- 21036483
- Study Type
- clinical
- Delivery
- other
- Peer Reviewed
- Yes
- Cited by
- 75 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Lactulose is a medicine that your gut bacteria can break down to make hydrogen gas, and this hydrogen actually helps reduce inflammation and damage in your intestines, so it could be a better way to treat inflammatory bowel disease.
Key Finding
Lactulose fermented by gut bacteria produces hydrogen gas, which may protect against intestinal inflammation by acting as an antioxidant.
Summary
Lactulose is a type of sugar that the human body cannot digest. When bacteria in the gut ferment lactulose, they produce hydrogen gas. This study proposes that lactulose works as an indirect antioxidant (a substance that reduces harmful oxidative stress in cells) by increasing hydrogen production in the gut, which may help reduce inflammation and symptoms in people with inflammatory bowel disease.
Practical Takeaway
This is a theoretical proposal based on animal studies (DSS-induced colitis in mice), not human trials. While the mechanism is interesting, there is no clinical evidence yet that lactulose supplementation helps inflammatory bowel disease in people. More human studies would be needed to determine if this approach is effective.
Abstract (excerpt)
Lactulose, which cannot be digested and absorbed by body, is clinically widely used to treat constipation and hepatic encephalopathy. Fermented by gastrointestinal tract bacteria, lactulose can produce considerable amount of hydrogen, which is protective for DSS-induced colitis as a unique…