34 papers
Q: Does molecular hydrogen help with depression / anxiety?
A: Of 34 peer-reviewed papers, 26 reported a positive effect (the most common), 3 limited/mixed, 0 negative, 5 not assessed. Study mix: 6 human (4 RCT), 22 animal/basic, 5 meta-analysis or synthesis. The most studied delivery route is hydrogen-rich water. The above aggregates published research and does not constitute a clinically established conclusion. See the individual paper pages for details and Safety notes for inhalation safety. (last updated 2026-05-15)
| Human | 6 | of which RCT | 4 |
|---|---|---|---|
| Animal/basic | 22 | Synthesis/meta | 5 |
| Reported effect | positive 26 ・ limited/mixed 3 ・ negative 0 ・ not assessed 5 | ||