— Editorial directory of molecular hydrogen

Molecular Hydrogen:
they told you water is water.

Name: Molecular Hydrogen Information
Creator: Molecular Hydrogen Information

It could cost you a decade of healthy, functional life.
70 peer-reviewed studies on molecular H₂ and hydrogen-rich
water. Audited in Crossref.

Search studies by condition, organ, or author

70 peer-reviewed studies · 9 body systems · 4 levels of evidence · Crossref

— You're probably here for one of these reasons

Which is yours?

Something isn't working

In your body, or in someone you love.

Find the evidence for your case →

You want to optimize

Your performance, mental clarity, recovery.

Go to Athletic Performance →

You want to prevent

What you saw in your family. Diabetes, Alzheimer's, cancer.

Start with the body →

You want better hydration

Beyond filtered or bottled water.

Read the introduction →

Any of the four is valid.
This directory was built for all four.

— The smallest and most effective antioxidant for human health

It crosses into the brain.
It reaches the mitochondria.
It only neutralizes what's harmful.

Not glutathione, not astaxanthin, not vitamin C, not coenzyme Q10 do all three. Molecular hydrogen does. And it's safe: over 50 years of clinical research across more than 70 countries. Zero documented adverse effects.

— Since 2007 1,500

studies on molecular hydrogen and hydrogen-rich H₂ water
published in peer-reviewed journals.

Seventy of the most solid.
Focused on human health.
Are here.

Start with your body system

— Three lies that could cost you a decade

You were probably told
one of these three things.

"Water is water."

Hydrogen-rich water contains 1–2 ppm of dissolved H₂. It's a different molecule. They measured it in Nature Medicine, 2007.

"Antioxidants are a fad."

Only H₂ crosses the blood-brain barrier, reaches the mitochondria, and doesn't accumulate. No other antioxidant does that.

"My doctor would have told me."

Your doctor has 11 minutes per appointment. They haven't yet read the Dhillon 2024 review on hydrogen water across 25 clinical conditions.

· Anti-aging L2

Not the last years.
The middle years.

You lose the last years anyway. The middle years you negotiate with what you put in your body every day. They decided whether you make it to your grandchild's graduation or only to their photograph; whether you had energy at 6 p.m. or dragged yourself home; whether your memory stayed sharp or you became "not who I used to be."

See Zanini 2021: H₂ lengthened telomeres in 70+ adults →

· Athletic performance L1

Not the match day.
The weeks leading up.

Your oxidative system decides how fast you recover, how late fatigue arrives, how much you can handle in the next session. The 2024 meta-analysis with 1,000+ athletes showed that dissolved H₂ lowers lactate, improves VO₂ max, and shortens DOMS. It doesn't promise a sub-3h marathon. It promises you arrive intact to week 8 of the block.

See 2024 Athletic performance meta-analysis →

Image related to cancer · treatment toxicity

· Cancer L1

Not the diagnosis.
The months of treatment.

Chemo saves lives; it also consumes them. The Mohd Noor 2023 PRISMA review filtered 677 studies down to 27: H₂ reduces hepatic toxicity and treatment fatigue without interfering with the cytostatic. What your oncologist hasn't had time to read yet.

See Mohd Noor 2023 PRISMA review →

· Type 2 Diabetes L2

Not the perfect diet.
Insulin sensitivity.

Kajiyama 2008: 30 patients with T2D drank 900 mL/day of H₂ water for 8 weeks. HbA1c dropped. Fasting glucose dropped. Oxidized LDL dropped 15%. It doesn't replace your metformin — it reduces the underlying oxidative damage the medication doesn't touch.

See Kajiyama 2008 type 2 diabetes →

Image related to hypertension · endothelium

· Hypertension L2

Not the pressure reading.
The inside of the vessel.

Endothelial function declines with age, with sugar, with chronic stress. Sakai 2014 showed that H₂ water at 7 ppm restores vascular dilation measured by FMD in 4 weeks. Critical concentration: below 3.5 ppm the effect disappears. What the BP cuff won't tell you, the vessel does.

See Sakai 2014 endothelial function →

· Fatty liver L2

Not the next diet.
The next 20 years of liver.

Non-alcoholic fatty liver affects 1 in 3 adults and most don't know it. Korovljev 2019: 24 weeks of H₂ water reduced hepatic fat measured by imaging and normalized ALT, AST and GGT. A non-pharmacological intervention with a real molecular mechanism — not generic "eat better" advice.

See Korovljev 2019 NAFLD →

Image related to arthritis · chronic inflammation

· Arthritis L2

Not today's pain.
The joint in 5 years.

Ishibashi 2014: patients with active rheumatoid arthritis received IV hydrogen. DAS28 dropped, systemic inflammation dropped, oxidative biomarkers fell. It doesn't replace biologics or methotrexate — it lets them work less against baseline oxidative stress.

See Ishibashi 2014 IV rheumatoid arthritis →

Image related to long-covid · persistent fatigue

· Long-COVID L1

Not the first 14 days.
The next 24 months.

Long-COVID affects 50–80% of survivors with symptoms that last years. Joli 2022 (systematic review) documented that H₂ inhalation improves physical function, respiratory capacity and reduces fatigue. Your doctor hasn't read it yet. Your body isn't waiting.

See Joli 2022 Long-COVID →

1 / 8

— Molecular hydrogen by body system

Find the evidence
for your case.

Each thematic block with its peer-reviewed studies.
The evidence organized by anatomical system.

Cellular Aging

3 studies

Telomeres lengthened at age 70.

Open block → 02

Cardiometabolic

16 studies

Diabetes, blood pressure, cholesterol, infarction.

Open block → 03

Cognitive and Neurological

9 studies

Memory, Parkinson's, stroke.

Open block → 04

Liver

3 studies

NAFLD affects 1 in 3 adults.

Open block → 05

Long-COVID

4 studies

Measurable post-viral recovery.

Open block → 06

Autoimmune and Inflammation

5 studies

Arthritis, psoriasis, periodontitis.

Open block → 07

Kidney and Dialysis

4 studies

Oxidative stress reduction in hemodialysis.

Open block → 08

Other Tissues

6 studies

Radiotherapy, myopathies, PMS.

Open block → 09

Athletic Performance

20 studies

Lactate, VO₂, recovery, DOMS.

Open block →

Go to the full anatomical directory

— Level 1 · The strongest evidence medicine has

Six studies.
Thousands of patients.
One conclusion.

Meta-analyses and systematic reviews on molecular hydrogen.
The summit of evidence.

#1 PRISMA · 27 studies L1

Molecular Hydrogen vs Cancer: What the Science Actually Says

Systematic review of 27 studies: H₂ lowers chemo toxicity without blunting its efficacy.

#2 Meta-analysis 2024 L1

Cholesterol and Triglycerides Normalized: Todorovic 2023 Meta-Analysis

Todorovic 2023 meta-analysis: H₂ lowers oxidized LDL and triglycerides across multiple controlled trials.

#3 Systematic review 2024 L1

Post-COVID Fatigue Relieved: 2022 Clinical Evidence

Joli 2022 systematic review: inhaled H₂ improves physical and respiratory function in post-COVID fatigue.

#4 Meta-analysis 2024 L1

Athletic Performance Lifted: 2024 Meta-Analysis

Zhou 2024 meta-analysis: molecular H₂ raises anaerobic power, endurance, and recovery across pooled trials.

#5 Meta-analysis Li 2024 L1

Post-Exercise Oxidative Stress Lowered: Li 2024 Meta-Analysis

Li 2024 meta-analysis: molecular H₂ lowers MDA and 8-OHdG and raises SOD after exercise.

#6 Meta-analysis Zhou 2023 L1

Fatigue Down, VO₂ Max Up: Zhou 2023 Meta-Analysis

Zhou 2023 meta-analysis: molecular H₂ raises VO₂max and lactate threshold while lowering perceived fatigue.

See the full Level 1 →

— Level 2 · 54 clinical trials · Selection

The heart of the directory.
54 RCTs on hydrogen water.

Selection by condition. Swipe to see more.

#24 RCT · Korovljev 2019 L2

Fatty Liver: How H₂ Reduces Fat Accumulation

Clinical study in NAFLD — which affects 1 in 4 adults: hydrogen-rich water reduces hepatic fat accumulation.

#8 RCT · Kajiyama 2008 L2

Type 2 Diabetes: Glucose Normalized — Kajiyama 2008

Kajiyama 2008 double-blind RCT: hydrogen-rich water improves HbA1c, glucose, and lipid profile in type-2 diabetes.

#7 RCT · Zanini 2021 L2

Aging: Longer Telomeres in 6 Months

Zanini 2021 RCT: 6 months of H₂-rich water lengthened the telomere ratio, improved DNA methylation, and raised functional strength in adults over 70.

#22 RCT crossover · Mizuno 2018 L2

Chronic Anxiety: Molecular Hydrogen Balances the Vagal Nerve Without a Drug

Crossover RCT (n=26): molecular hydrogen improves heart-rate variability and reduces anxiety markers without pharmacology.

#11 RCT · Sakai 2014 L2

H₂ Concentration Matters: Vascular Gains Only Above 3.5 mg/L

Sakai 2014 clinical study: H₂ concentrations above 3.

#31 RCT · Ishibashi 2015 L2

H₂ Water in Rheumatoid Arthritis: Oxidative Stress and DAS28 Down

Crossover clinical trial: hydrogen-rich water lowers oxidative stress and disease activity (DAS28) in active rheumatoid arthritis.

#34 RCT · Nakayama 2018 L2

Hemodialysis: How H₂ Reduces Cardiovascular Mortality

Cohort of 574 hemodialysis patients: hydrogen-enriched dialysate is associated with lower cardiovascular mortality at 12 months.

#32 RCT · Zhu 2018 L2

Psoriasis: How H₂ Reduces PASI and Visible Symptoms

Clinical trial (n=41): hydrogen-water baths significantly reduce PASI scores in psoriasis and parapsoriasis.

See all 54 RCTs in Level 2 →

"It was discovered as a therapeutic antioxidant in 2007. Eighteen years later, there are more than 1,500 studies. Seventy of the most solid, focused on human health, are here."

— Molecular Hydrogen Information

Start
wherever you want.

The Anatomical Directory

Tap an organ. See the molecular hydrogen studies relevant to that area. 70 studies mapped to the human body.

Open the directory

The Evidence Levels

Start with the strongest evidence: meta-analyses, RCTs, observational studies, and case reports. The evidence in the order medicine ranks it.

See the meta-analyses

Molecular Hydrogen:they told you water is water.