Hydrogen Water Shows Promise Against Oxidative Stress-Related Diseases
- Authors
- Wafaa H Mohamed, Idris Long
- Journal
- Journal of Clinical Biochemistry and Nutrition
- Year
- 2026
- DOI
- 10.3164/jcbn.26-5
- Study Type
- clinical
- Peer Reviewed
- Yes
- Country
- Egypt
- Health Condition
- Oxidative Stress
- Body System
- Cardiovascular
TL;DR
Scientists found that drinking hydrogen-rich water might help your body fight damage from harmful molecules that cause diseases like heart disease and diabetes, and early studies show it could improve blood sugar control and exercise performance—but they need bigger, better-designed studies to prove it actually works.
Key Finding
Hydrogen-rich water appears to selectively neutralize harmful free radicals while preserving beneficial ones, and activates cellular protective pathways, with preclinical and clinical evidence suggesting potential improvements in blood sugar control, heart function, and exercise performance.
Summary
This review examined research on hydrogen-rich water (HRW) and its potential effects on diseases caused by oxidative stress—a harmful imbalance in the body where damaging molecules called free radicals accumulate. The researchers found that hydrogen may work by neutralizing these harmful free radicals while preserving beneficial ones, and by activating protective pathways inside cells. Studies suggest HRW might help with blood sugar control, heart health, and exercise performance, and it appears to be very safe. However, the researchers note that larger, well-designed clinical trials are needed to confirm whether HRW actually works as a treatment.
Practical Takeaway
While early evidence suggests hydrogen-rich water may have therapeutic potential for oxidative stress-related conditions, this is a review of existing studies rather than new research, and the authors emphasize that large-scale clinical trials are still needed to confirm effectiveness. The excellent safety profile is encouraging, but consumers should be cautious about health claims until more rigorous human studies are completed.
Abstract
Oxidative stress is a central mechanism in metabolic, cardiovascular, and neurodegenerative diseases, contributing to inflammation, mitochondrial dysfunction, and apoptosis. Consequently, redox-modulating therapies are increasingly explored as potential therapeutic strategies. This review evaluates the mechanistic basis, experimental evidence, and clinical applicability of hydrogen-rich water (HRW) in oxidative stress-related diseases. A structured literature search identified mechanistic, preclinical, and clinical studies investigating HRW or molecular hydrogen (H2) on oxidative stress, inflammation, mitochondrial regulation, and disease-related outcomes. Due to substantial methodological heterogeneity, findings were synthesized qualitatively. HRW has been proposed to selectively neutralize highly reactive species such as hydroxyl radicals (•OH) and peroxynitrite (ONOO-) while preserving physiological reactive oxygen species signalling. Mechanistic studies demonstrate activation of nuclear factor erythroid 2-related factor 2/antioxidant response element (Nrf2/ARE) pathways, suppression of nuclear factor kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) inflammatory cascades, modulation of JAK/STAT signalling, preservation of mitochondrial bioenergetics, and enhancement of autophagic regulation. Preclinical and clinical studies report improvements in glycaemic control, endothelial function, cardiometabolic health, neuroprotection, exercise performance, and treatment-related fatigue. Despite an excellent safety profile, standardization of HRW preparation and large multicentre randomized controlled trials (RCTs) remain necessary to establish clinical efficacy and translational potential.