Hydrogen-rich water has a positive effect on heart rate variability at rest and during orthostatic loading, but not during cycling, in healthy adults: A pilot randomized, placebo-controlled crossover trial

H2HUBB PLAIN-LANGUAGE TAKEAWAY The study adds to the molecular-hydrogen evidence base, but the available record does not support a firm conclusion about therapeutic benefit. Hydrogen water cardiovascular health study 2026: what the findings mean The publication “Hydrogen-rich water has a positive effect on heart rate variability at rest and during orthostatic loading, but not during […]