
Mood and stress
In the 2018 randomized, double-blind crossover trial, 26 healthy adults drinking 600 mL a day of hydrogen water for 4 weeks had lower psychological distress scores than with placebo water. The study was small and partly industry-funded.
Memory and thinking
- Healthy young adults drinking hydrogen water for a month showed no improvement in thinking tests
- A one-year trial in people with mild memory problems didn't improve overall test scores; a subgroup with a specific genetic risk factor showed some differences
- Animal studies are more positive than human ones

How to read this
Brain research on hydrogen is early. A review by the Alzheimer's Drug Discovery Foundation found no evidence that hydrogen water reduces dementia risk.
Bottom line
One small trial suggests a possible mood or stress effect. There's no good evidence hydrogen water improves memory or protects against dementia. If you're struggling with anxiety or mood, please talk with a doctor or counselor.
Sources
- Mizuno K, et al. Hydrogen-rich water for improvements of mood, anxiety, and autonomic nerve function in daily life. Medical Gas Research, 2018. Read it
- Alzheimer's Drug Discovery Foundation. Cognitive Vitality report: Molecular hydrogen. Read it
Not medical advice. Hydrogen water is not intended to diagnose, treat, cure or prevent any disease. Talk with your doctor about any health condition or medication.
Try fresh hydrogen alkaline water in Albuquerque. Your first visit is free. Call (505) 498-4098 to claim it.
Common questions
Can hydrogen water help anxiety?
One small study found lower distress scores. It's not a treatment for anxiety.
Does it help with brain fog?
There's no solid evidence. Sleep, hydration and medical checkups are better first steps.