Electrolyzed-Reduced Water and Cancer Cell Growth in Lab Tests
Suppressive Effect of Electrolyzed-Reduced Water on the Growth of Cancer Cells and Microorganisms
Research hubs: Digestive System · Immune System
This research was done on cells or tissue in a lab, not in people or animals.
- Evidence type
- Laboratory study (cells or tissue)
- Authors
- Takaaki Komatsu, Shigeru Kabayama, Akira Hayashida, Hirofuma Nogami, Kiichiro Teruya, Yoshinori Katakura, Kazumiti Otsubo, Shinkatsu Morisawa, Sanetaka Shirahata
- Journal
- Animal Cell Technology: From Target to Market
- Year
- 2001
- Study Type
- Cell Culture
- Delivery
- Water (Electrolysis)
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 11 (OpenAlex, as of November 2026)
- Country
- Japan
TL;DR
Electrolyzed reduced water (ERW) can slow down the growth of certain cancer cells and mildly kill bacteria like E. coli, potentially helping to preserve food and balance gut bacteria.
Key Finding
Electrolyzed-reduced water suppressed cancer cell growth in laboratory cultures, with effects varying by cancer type, while appearing to cause minimal harm to normal cells.
Summary
Researchers tested electrolyzed-reduced water (water treated with electricity to add extra electrons) on cancer cells grown in laboratory dishes and on bacteria. The water slowed the growth of cancer cells, particularly in certain types of cultures, and the effect varied depending on the cancer type and how the water was made. The researchers believe the water works by removing harmful molecules called reactive oxygen species (ROS) from inside cancer cells, which interferes with their ability to grow and spread without damaging normal cells. The water also showed weak bacteria-killing effects.
Practical Takeaway
This is an early laboratory study in cell cultures only—not in animals or humans—so it cannot yet support any health claims about hydrogen water and cancer. While the results are interesting, many laboratory findings do not translate to real-world effects. Much more research, including human studies, would be needed before drawing any conclusions about potential benefits.
Abstract (excerpt)
We investigated the suppressive effect of electrolyzed reduced water (ERW) on the growth of not only various human cancer cells but also microorganisms such as gram-negative Escherichia coli. ERW suppressed the growth of cancer cells, especially in soft-agar culture. The suppressive effect of ERW…