Hydrogen Water Reduces Gum Disease in Laboratory Rats
Hydrogen-rich water attenuates experimental periodontitis in a rat model
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (rat)
- Authors
- Kenta Kasuyama, Takaaki Tomofuji, Daisuke Ekuni, Naofumi Tamaki, Tetsuji Azuma, Koichiro Irie, Yasumasa Endo, Manabu Morita
- Journal
- Journal of Clinical Periodontology
- Year
- 2011
- PMID
- 22092571
- Study Type
- Rat
- Delivery
- Water (Dissolved)
- Dose
- hydrogen-rich water via drinking water for 4 weeks
- Duration
- 4 weeks
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 50 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
Drinking hydrogen-rich water may help prevent gum disease by reducing harmful oxidative stress in the gums.
Key Finding
Hydrogen-rich water reduced reactive oxygen species levels and inflammatory markers in rats with induced periodontitis, preventing bone loss and immune cell infiltration in gum tissues.
Summary
Researchers induced gum disease in rats and gave some of them hydrogen-rich water to drink while others received regular water. Rats with gum disease that drank hydrogen-rich water had lower levels of harmful molecules called reactive oxygen species in their blood, less inflammation in their gum tissues, and less bone loss compared to rats that drank regular water. The study suggests hydrogen may help protect gums by reducing oxidative stress (damage from unstable molecules).
Practical Takeaway
This rat study provides early evidence that hydrogen-rich water may help reduce gum inflammation by lowering oxidative stress. However, this is an animal study only—human research is needed to determine whether these effects would occur in people with gum disease. The findings are promising but not yet applicable to clinical recommendations.
Abstract (excerpt)
AbstractAimReactive oxygen species (ROS) contribute to the development of periodontitis. As molecular hydrogen can act as a scavenger of ROS, we examined the effects of treatment with hydrogen‐rich water on a rat model of periodontitis.Material & MethodsA ligature was placed around the maxillary…