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Scientific research

Research

The Science Behind H2

Over 74 human clinical studies have explored the potential of molecular hydrogen across diverse medical disciplines.

Evidence

Human Clinical Studies Overview

Molecular hydrogen has been studied as a wellness intervention across 14 categories. Below is an overview of the research landscape.

Cardiovascular

5 studies

Post-cardiac arrest survival improvement

Oncology & Radiation

12 studies

Improved quality of life during radiotherapy

Neurology

10 studies

Cognitive improvements in Alzheimer's APOE4 carriers

Respiratory & COVID-19

9 studies

COPD symptom improvement with H2/O2 therapy

Metabolic / Diabetes

4 studies

Reduced cholesterol and glucose in metabolic syndrome

Liver (NAFLD)

3 studies

Significant liver fat reduction

Kidney / Hemodialysis

2 studies

Reduced mortality risk over 3.3-year observation

Rheumatology

3 studies

Reduced disease activity in rheumatoid arthritis

Sports & Recovery

12 studies

Reduced lactate and perceived exertion

Longevity

1 studies

Favorable effects on telomere length in older adults

Skin & Dermatology

3 studies

Measurable biological skin age reduction

Mental Health

2 studies

Reduced anxiety and mental fatigue

Gut Health

2 studies

Reduced blood ROS levels

Other Conditions

6 studies

Graft-vs-host disease survival improvement

Safety

An Excellent Safety Profile

No serious adverse effects reported in any clinical trial, regardless of delivery method (inhalation, water, IV, bathing, capsules).
Japan: Approved H2 inhalation as Advanced Medical Treatment (Class B) for post-cardiac arrest care.
China: Included H2/O2 therapy in official COVID-19 treatment guidelines.
H2 concentrations below 4% in air are considered safe and non-explosive. Our devices operate well within these parameters.

Further Reading

Key Reviews & Meta-Analyses

For a deeper dive into the science, these peer-reviewed publications provide comprehensive overviews.

Molecular Hydrogen Therapy — Review on Clinical Studies and Outcomes (2023) PMC Hydrogen Water: Extra Healthy or a Hoax? — Systematic Review (2024) PMC Molecular Hydrogen Therapy: Mechanisms, Delivery Methods, Applications (2025) PMC Comprehensive Review: H2 as Novel Nutrition Therapy (2025) PMC

Important Note: Many studies listed have small sample sizes and are pilot or preliminary in nature. The field of molecular hydrogen research is actively evolving and would benefit from more large-scale, multi-center randomized controlled trials. Negative and null results are included for scientific integrity. This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional.