Hydrogen-Enriched Water and Cancer Cell Growth in Lab Tests
Neutral pH Hydrogen-Enriched Electrolyzed Water Achieves Tumor-Preferential Clonal Growth Inhibition Over Normal Cells and Tumor Invasion Inhibition Concurrently With Intracellular Oxidant Repression
This research was done on cells or tissue in a lab, not in people or animals.
- Evidence type
- Laboratory study (cells or tissue)
- Authors
- Yasukazu Saitoh, Hajime Okayasu, Li Xiao, Yoshikazu Harata, Nobuhiko Miwa
- Journal
- Oncology Research Featuring Preclinical and Clinical Cancer Therapeutics
- Year
- 2008
- PMID
- 19192719
- Study Type
- Cell Culture
- Delivery
- Water (Electrolysis)
- H₂ concentration
- 1.1 ppm, declining to 0.3-0.4 ppm
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 60 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
A special type of water with neutral pH and enriched with hydrogen can slow down the growth of cancer cells without harming normal cells.
Key Finding
Hydrogen-enriched water inhibited the growth and invasion of cancer cells in laboratory tests while causing minimal harm to normal cells, apparently by reducing damaging oxidant molecules inside the cancer cells.
Summary
Researchers tested a special type of water enriched with hydrogen gas on cancer cells and normal cells in laboratory dishes. The hydrogen-enriched water slowed the growth of tongue cancer and fibrosarcoma (a type of muscle cancer) cells while leaving normal mouth cells relatively unharmed. The water appeared to work by reducing harmful molecules called oxidants (unstable oxygen-containing compounds) inside the cancer cells.
Practical Takeaway
This is very early laboratory research using cancer cells in dishes, not human studies, so it cannot yet support any health claims about hydrogen water and cancer prevention. The hydrogen concentration in the water dropped significantly within minutes, which raises questions about how much active hydrogen would reach cells in real use. Much more research, including human trials, would be needed before any therapeutic recommendations could be made.
Abstract (excerpt)
The properties and effects of neutral pH hydrogen-enriched electrolyzed water (NHE water) on tumor cells were examined. NHE water diminished hydroxyl radicals as demonstrated by ESR in a cell-free system. Human tongue carcinoma cells HSC-4 were inhibited for either colony formation efficiencies…