State of H₂ human studies 2026
An open, curated overview of all 292 peer-reviewed human studies on molecular hydrogen (H₂) — as a downloadable dataset. Compiled from PubMed and CrossRef, DOIs verified, null and negative results included.
Download the dataset
Three formats, same data. Freely reusable with attribution (CC BY 4.0). Files are generated from the live database on every request — always current.
For programs / AI assistants: https://h2medicine.org/api/dataset.json · https://h2medicine.org/api/dataset.csv · https://h2medicine.org/api/dataset.bib
What it contains
Per study: PubMed ID, year, title, authors, journal, DOI, its linked page here, delivery method(s), indication(s), evidence level and whether it is a therapeutic application.
Best-covered indications (by number of human studies):
- Oxidative stress — 108 studies
- Sports / Performance — 67 studies
- Immune system — 67 studies
- Cardiovascular — 61 studies
- Neurology / Brain — 53 studies
- Respiratory / Lung — 48 studies
- Metabolic — 37 studies
- Skin / Aging — 34 studies
Methodology & provenance
Studies come from systematic PubMed search, complemented by ClinicalTrials.gov, Europe PMC and Google Scholar. Every entry is verifiable via its PubMed ID and, where available, its DOI. We include human studies on molecular hydrogen — including those with null results. The evidence level classifies the study design (case report through controlled trial).
Browse every study individually →
License & citation
The dataset is released under CC BY 4.0 — you may freely use, share and adapt it, as long as you credit the source.
Suggested citation: H2Medicine. State of H₂ human studies 2026 (v2026.1). https://h2medicine.org/state-of-h2-human-studies-2026/
For information only — not medical advice.