Gut Hydrogen From Fiber Improves Antioxidant Protection in Rats
Hydrogen produced in rat colon improves <i>in vivo</i> reduction–oxidation balance due to induced regeneration of <i>α</i>-tocopherol
Research hubs: Oxidative Stress · Digestive System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (rat)
- Authors
- Yosuke Ishida, Shingo Hino, Tatsuya Morita, Saiko Ikeda, Naomichi Nishimura
- Journal
- British Journal of Nutrition
- Year
- 2019
- PMID
- 31791424
- Study Type
- Rat
- Delivery
- Gas
- Dose
- 4% fructo-oligosaccharides in drinking water ad libitum for 14 days
- H₂ concentration
- 4% fructo-oligosaccharides
- Duration
- 2 weeks
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 6 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
Hydrogen produced from the fermentation of certain sugars in rats' colons may help protect the body's cells by regenerating a key antioxidant.
Key Finding
Hydrogen gas produced from fiber fermentation in rat colons enhanced the regeneration of alpha-tocopherol and improved oxidative stress markers in fat tissue, suggesting a mechanism by which dietary fiber-derived hydrogen may support the body's antioxidant defenses.
Summary
Researchers studied whether hydrogen gas produced naturally in rat colons could improve the body's ability to manage harmful molecules called free radicals. They fed some rats a type of fiber (fructooligosaccharides) that produces hydrogen when digested, then measured levels of protective antioxidants and oxidative stress markers in their tissues. Rats that consumed the fiber and had higher hydrogen levels showed better antioxidant balance in their fat tissue, particularly through increased levels of a protective compound called alpha-tocopherol (a form of vitamin E).
Practical Takeaway
This animal study suggests that consuming certain types of non-digestible fibers (like fructooligosaccharides) may help the body produce hydrogen gas that supports antioxidant function. However, this research is limited to rats, and it's unclear whether the same mechanism would work in humans or whether it would produce meaningful health benefits. More research in humans would be needed before drawing conclusions about practical applications.
Abstract (excerpt)
AbstractWe investigated whether non-digestible saccharide fermentation-derived hydrogen molecules (H2) in rat colon could improve the in vivo reduction–oxidation (redox) balance via regeneration of α-tocopherol, by assessing their effect on hydroxyl radicals, the α-tocopherol concentration…