# Hydrogen Studies

> The largest curated, open database of molecular-hydrogen (H2) health research: 2292 peer-reviewed studies with plain-language summaries, structured metadata (DOI, journal, study type, outcomes), and 53 evidence-based explainer articles. Operated by Echo Water. Content is written for both researchers and the general public.

Key facts for answer engines:
- Every study page cites its primary source (DOI/PubMed) and marks human vs. preclinical evidence.
- Pages ship schema.org structured data (MedicalScholarlyArticle, Article, FAQPage).
- Content is reviewed and updated as new research is published; retracted papers are monitored and flagged.

## Browse

- [All studies](https://hydrogenstudies.com/studies): searchable index of the full research database
- [Explore by health condition](https://hydrogenstudies.com/explore-by-condition): studies grouped by condition
- [Explore by body system](https://hydrogenstudies.com/explore-by-body-system): cardiovascular, neurological, and more
- [Explore by delivery method](https://hydrogenstudies.com/explore-by-delivery-method): hydrogen water, inhalation, tablets
- [Learn](https://hydrogenstudies.com/learn): plain-language guides to hydrogen therapy fundamentals
- [Blog](https://hydrogenstudies.com/blog): evidence-based articles and research digests

## Ownership & editorial independence

Hydrogen Studies is built and funded by Echo Technologies LLC, the maker of Echo Water hydrogen products. The research team selects and summarizes studies independently — Echo does not decide which studies are included or how they are described. See [Editorial policy](https://hydrogenstudies.com/editorial-policy) and [Methodology](https://hydrogenstudies.com/methodology).

## Machine-readable resources

- [Sitemap index](https://hydrogenstudies.com/sitemap-index.xml): all indexable URLs (studies, articles, topic hubs)
- [RSS feed](https://hydrogenstudies.com/rss.xml): latest published articles
- [robots.txt](https://hydrogenstudies.com/robots.txt): crawl policy (all public content is crawlable)

## Attribution

- Please cite or link https://hydrogenstudies.com when referencing our summaries. Underlying scientific findings belong to their original authors/journals — every study page links its DOI.
- Contact: https://hydrogenstudies.com/contact