Hydrogen Therapy and Heart Changes in Mice with Sleep Disorder
Hydrogen Attenuates Chronic Intermittent Hypoxia-Induced Cardiac Hypertrophy by Regulating Iron Metabolism
Research hubs: Cardiovascular System · Respiratory System
This research was done in animals. Results in animals often don't carry over to people.
- Evidence type
- Animal study (mouse)
- Authors
- Jixian Song, Qi Chen, Shan Xu, Yujing Gou, Yajing Guo, Cuiling Jia, Chenbing Zhao, Zhi Zhang, Boliang Li, Yashuo Zhao, Ensheng Ji
- Journal
- Current Issues in Molecular Biology
- Year
- 2023
- PMID
- 38132482
- Study Type
- Mouse
- Delivery
- Gas
- Dose
- hydrogen–oxygen mixture inhalation, 2 h/d for 5 weeks
- Duration
- 5 weeks
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 13 (OpenAlex, as of November 2026)
- Country
- China
TL;DR
Breathing hydrogen gas helps reduce heart enlargement and damage caused by intermittent low oxygen levels by improving iron balance and reducing oxidative stress in mice.
Key Finding
Hydrogen gas inhalation reduced heart enlargement caused by chronic low-oxygen exposure in mice by decreasing iron accumulation and oxidative stress in heart tissue.
Summary
This mouse study examined whether hydrogen gas could prevent heart enlargement caused by repeated episodes of low oxygen (a condition similar to sleep apnea). Researchers exposed mice to low-oxygen cycles and gave some of them hydrogen gas to breathe. They found that hydrogen reduced heart enlargement, decreased harmful molecules called free radicals, and lowered iron buildup in heart cells—all of which may have protected the heart from damage.
Practical Takeaway
While these results are promising, this is an animal study in mice, not humans. The findings suggest hydrogen may help protect hearts during repeated oxygen deprivation, but much more research—including human trials—would be needed before any health recommendations could be made. The specific mechanisms involved (iron metabolism and free radical reduction) may or may not translate to human physiology.
Abstract (excerpt)
The present study aimed to investigate the impact of hydrogen (H2) on chronic intermittent hypoxia (CIH)-induced cardiac hypertrophy in mice by modulating iron metabolism. C57BL/6N mice were randomly allocated into four groups: control (Con), CIH, CIH + H2, and H2. The mice were exposed to CIH…