Hydrogen-Saturated Saline and Noise-Induced Hearing Loss in Guinea Pigs
Hydrogen-Saturated Saline Protects Intensive Narrow Band Noise-Induced Hearing Loss in Guinea Pigs through an Antioxidant Effect
Research hubs: Brain & Nervous System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (guinea pig)
- Authors
- Liwei Chen, Ning Yu, Yan Lu, Longjun Wu, Daishi Chen, Weiwei Guo, Lidong Zhao, Mingbo Liu, Shiming Yang, Xuejun Sun, Suoqiang Zhai
- Journal
- PLoS One
- Year
- 2014
- PMID
- 24945316
- Study Type
- Guinea Pig
- Participants
- 3
- Delivery
- Saline (Dissolved)
- Dose
- 1 ml/100 g abdominal injection daily, 3 days before and 1 h before noise exposure
- Duration
- 8 days
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 24 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
A special saltwater solution containing hydrogen can protect guinea pigs' ears from damage caused by very loud noise.
Key Finding
Hydrogen-saturated saline significantly reduced noise-induced hearing loss and inner ear hair cell damage in guinea pigs, with the protective effect linked to reduced levels of harmful free radicals in the cochlea.
Summary
Researchers tested whether hydrogen-saturated saline (a salt solution containing dissolved hydrogen gas) could protect guinea pigs' hearing from damage caused by loud noise exposure. Guinea pigs that received hydrogen-saturated saline injections before and during loud noise exposure had less hearing damage and fewer damaged hair cells in their inner ears compared to control groups. The hydrogen appeared to work by reducing harmful molecules called free radicals that are produced by noise trauma.
Practical Takeaway
This animal study suggests hydrogen-saturated saline may help protect hearing from noise damage through antioxidant mechanisms, but the findings are limited to guinea pigs and would need to be tested in humans before any clinical recommendations could be made. The study used injections rather than drinking hydrogen water, so it's unclear whether oral hydrogen water would have similar effects.
Abstract (excerpt)
The purpose of the current study was to evaluate hydrogen-saturated saline protecting intensive narrow band noise-induced hearing loss. Guinea pigs were divided into three groups: hydrogen-saturated saline; normal saline; and control. For saline administration, the guinea pigs were given daily…