Hydrogen Water Reduces Exercise Inflammation in Active Adults
- Authors
- Anna Stolecka-Warzecha, Tomasz Zając, Marcin Gandyk, Maciej Kostrzewa, Ewa Sadowska-Krępa
- Journal
- Nutrients
- Year
- 2026
- DOI
- 10.3390/nu18040694
- Study Type
- Human
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- Poland
- Health Condition
- Exercise-Induced Inflammation
- Body System
- Immune System
TL;DR
Eight weeks of hydrogen-enriched alkaline water intake was associated with lower post-exercise IL-6 responses, though baseline imbalances limit firm conclusions.
Key Finding
Adults who consumed hydrogen-enriched alkaline water for eight weeks showed significantly lower post-exercise inflammation markers (IL-6) compared to those drinking standard water, though baseline differences between groups limit the strength of this finding.
Summary
This study tested whether drinking alkaline hydrogen-enriched water for eight weeks could reduce inflammation and cellular damage caused by intense exercise. Forty physically active adults either drank this special water or regular water, then performed a maximal exercise test. The group drinking hydrogen water showed lower inflammation markers (IL-6) after exercise compared to the control group, though the groups started with different baseline levels, which makes it harder to draw firm conclusions.
Practical Takeaway
This small study suggests hydrogen water may help reduce exercise-induced inflammation in active adults, but the researchers themselves note that imbalances between the groups at the start weaken the conclusions. Larger, better-controlled studies are needed before making any health decisions based on this finding.
Abstract
Background: Acute high-intensity exercise induces transient inflammatory and oxidative stress responses, mediated by redox-sensitive signaling pathways and reflected by elevations in interleukin-6 (IL-6) and lipid peroxidation products. Modulation of these responses through hydration-based redox interventions remains insufficiently characterized at the biochemical level. Objective: This randomized controlled trial investigated whether regular consumption of redox (alkaline) water influences exercise-induced inflammatory and oxidative stress markers in physically active adults. Methods: Forty physically active adults were randomized into an experimental group (EG; n = 20) and consumed redox water subjected to molecular-level modification, yielding alkaline hydrogen-enriched water (pH 9.2-9.4), or a control group (CG; n = 20) that consumed standard water. After eight weeks of intervention, participants performed a standardized maximal aerobic exercise test. Plasma IL-6 and malondialdehyde (MDA) concentrations were measured at baseline and immediately post-exercise. Statistical analyses included two-way repeated measures ANOVA and ANCOVA. Results: A pronounced group × time interaction was observed for IL-6 (F(1,38) = 36.89, p < 0.001). The EG exhibited a significant post-exercise reduction in IL-6, whereas the CG demonstrated a robust increase. A significant group × time interaction was also detected for MDA (F(1,38) = 4.98, p = 0.029), reflecting stable lipid peroxidation levels in the EG and increased levels in the CG; however, baseline-adjusted analyses indicated that post-exercise MDA differences were largely attributable to initial variability. Hematological and coagulation parameters remained within physiological ranges in both groups. Conclusions: Redox water intake was associated with lower immediate post-exercise IL-6 compared with controls after baseline adjustment; however, pronounced baseline imbalance limits causal interpretation and warrants confirmation in larger trials with balanced inflammatory profiles. These findings highlight a potential biochemical mechanism linking hydration redox properties with inflammatory regulation during physical stress.