DALURIS / HYDROGEN SCIENCE

What Is Hydrogen?

Hydrogen (symbol H, atomic number 1) is the lightest chemical element and the most abundant element in the universe. The most common hydrogen atom has one proton in its nucleus and one electron.

Hydrogen is found in stars, water, organic molecules, and every living organism. In the Sun, hydrogen nuclei participate in fusion reactions that release energy. On Earth, hydrogen is usually chemically bonded to other elements rather than present as free gas.

Water is a familiar example: each H₂O molecule contains two hydrogen atoms bonded to one oxygen atom. Hydrogen is also part of proteins, fats, carbohydrates, and DNA.

Key distinction: The element hydrogen is not the same thing as molecular hydrogen gas (H₂) or water (H₂O). How the atoms are bonded determines the substance.

Hydrogen atom: proton, electron and electron cloud

Simplified educational model of a hydrogen atom.

02 / THE MOLECULE

What Is Molecular Hydrogen (H₂)?

Molecular hydrogen is formed when two hydrogen atoms share electrons in a covalent bond. The resulting H₂ molecule is a colorless, odorless gas under ordinary conditions and is the smallest neutral molecule.

It is essential to distinguish between H (one hydrogen atom), H₂ (two bonded hydrogen atoms), and H₂O (water, where hydrogen is chemically bonded to oxygen).

Hydrogen-enriched water is not a new kind of H₂O molecule. It is ordinary water containing additional, physically dissolved H₂ gas.

Think of it this way: H₂ dissolved in water is comparable to a gas dissolved in a drink: the dissolved gas is present alongside the water molecules, not permanently bonded into them.

Two hydrogen atoms bonding to form a molecular hydrogen H2 molecule

03 / ORIGINS

Where Does Molecular Hydrogen Come From?

H₂ can form through geological, biological, electrochemical, and industrial processes. These sources differ in scale and mechanism, but they all involve reactions that produce molecular hydrogen.

Natural geological processes

Interactions between water and certain minerals can generate hydrogen underground. H₂ may also be present in some natural gas systems and subsurface environments.

Microbial production

Some microorganisms release H₂ during metabolism. In the human intestine, bacteria can produce hydrogen while fermenting carbohydrates that escape digestion. Some of that gas is absorbed and later exhaled.

Water electrolysis

Electricity drives reactions that can split water into hydrogen and oxygen. Specialized systems can generate H₂ for industrial applications or for incorporation into water.

Industrial hydrogen production: Hydrogen is also manufactured at scale using methods such as natural-gas reforming and electrolysis. The production method influences energy use and environmental impact.

04 / PHYSICAL PROPERTIES

Why Is H₂ Scientifically Interesting?

Molecular hydrogen has an exceptionally small molecular size, no net electrical charge, and the ability to diffuse through many biological membranes. These properties have encouraged researchers to study its movement through tissues and possible interactions with biological processes.

H₂ is relatively unreactive with many biological substances under ordinary physiological conditions. Proposed effects may involve more than direct chemical reactions, including changes in cellular signaling. The precise mechanisms remain under investigation.

Important: A molecule's ability to enter tissues does not prove it will produce a health benefit. Biological effects must be demonstrated through carefully designed experiments and clinical trials.

Molecular hydrogen diffusing through a phospholipid cell membrane

05 / HUMAN PHYSIOLOGY

What Happens When H₂ Enters the Body?

Hydrogen exposure depends on the route of administration. When a person drinks hydrogen-rich water, dissolved H₂ may be absorbed from the digestive tract, temporarily enter circulation, diffuse into tissues, and eventually leave the body. The actual amount and timing depend on the dose and circumstances.

01IngestionWater containing dissolved H₂ is consumed.

02AbsorptionSome H₂ crosses the digestive lining.

03DistributionH₂ can diffuse into different compartments.

04ExposureCells may encounter H₂ for a limited time.

05EliminationMuch of the absorbed gas is exhaled.

Can H₂ reach every cell?

Its small size supports diffusion across biological membranes, but it would be inaccurate to say that every H₂ molecule reaches every cell. Distribution varies with administration method, concentration, timing, and physiology.

Does hydrogen stay in the body?

H₂ exposure is generally temporary. It is not known to accumulate indefinitely in cells after drinking hydrogen-rich water. This is one reason why dosing protocols and timing matter in research.

Hydrogen-rich water ingestion, absorption, circulation and exhalation

06 / CELLULAR BIOLOGY

How Might Hydrogen Interact With Cells?

Cells regulate energy production, communication, and responses to stress. To understand H₂ research, three concepts are especially useful: oxidative stress, inflammation, and mitochondria.

Oxidative stress

Cells naturally generate reactive oxygen species. These molecules also serve useful signaling and immune functions. Oxidative stress can occur when reactive processes overwhelm protective systems. Researchers have studied whether H₂ exposure changes selected oxidative-stress markers; the mechanisms and clinical relevance remain uncertain.

Inflammation

Inflammation is a normal protective response to injury or infection. When it becomes persistent or dysregulated, it can contribute to disease. Some H₂ studies have measured changes in inflammatory markers and signaling pathways, but these observations do not establish H₂ as a treatment for inflammatory disorders.

Mitochondria

Mitochondria help cells produce ATP and participate in stress signaling. Preclinical research has explored possible connections between H₂ exposure and mitochondrial function. It has not been established that drinking hydrogen-rich water universally boosts cellular energy in healthy people.

07 / AREAS OF STUDY

What Potential Effects Are Researchers Studying?

Research spans laboratory experiments, animal studies, and relatively small human trials. A change in a biomarker does not necessarily translate into better health. The areas below describe research questions, not established consumer benefits.

Oxidative balance

Can exposure to H₂ influence particular markers of oxidative stress or related signaling pathways?

Inflammatory responses

Do measured inflammatory markers change under certain study conditions?

Cellular processes

Could H₂ exposure affect cellular communication, stress responses, or mitochondrial-related processes?

Exercise and recovery

Can hydrogen-rich water influence fatigue, selected performance measures, or recovery after exercise?

Metabolic markers

Are there reproducible changes in glucose, lipid measurements, or other metabolic indicators?

Healthy aging research

How might H₂ relate to biological pathways associated with aging? No reliable evidence shows that hydrogen water extends human life.

08 / DISEASE & AGING RESEARCH

Which Health Conditions Have Been Investigated?

Investigators have explored H₂ in experimental models and early human research involving cardiovascular, neurological, metabolic, and inflammatory conditions. These investigations should not be confused with evidence that H₂ prevents or treats disease.

Cardiovascular research

Studies have examined oxidative and inflammatory processes relevant to cardiovascular health. This does not establish hydrogen water as a therapy for heart disease.

Neurological research

Preclinical work has explored H₂ in models involving neurological injury and neurodegeneration. Animal findings cannot be assumed to apply to patients.

Metabolic conditions

Small clinical studies have evaluated metabolic markers in selected populations. Findings are preliminary and do not replace established diabetes or lipid treatments.

Inflammation and aging

Researchers have studied inflammatory pathways and age-related cellular changes. There is no robust clinical evidence that drinking hydrogen water stops aging or prevents age-related disease.

Evidence boundary: Hydrogen-rich water is not a proven cure, treatment, or disease-prevention method. Never replace prescribed care with hydrogen water.

09 / THE FUNDAMENTALS

What Is Hydrogen-Rich Water?

Hydrogen-rich water is ordinary water containing additional dissolved molecular hydrogen (H₂). The water itself remains H₂O; the extra H₂ is physically dissolved rather than chemically bonded to oxygen.

Regular drinking water can contain dissolved gases, but hydrogen-rich water is prepared specifically to add H₂. It is also not the same as alkaline water: alkalinity describes pH, while hydrogen richness describes the concentration of dissolved H₂. One property does not guarantee the other.

Because H₂ is a gas, it can gradually escape from an open container. The actual amount present depends on how the water is made, stored, and measured.

Regular water compared with water containing dissolved molecular hydrogen

10 / PRODUCTION METHODS

How Is Hydrogen-Rich Water Produced?

Different methods can introduce molecular hydrogen into water. Their performance and safety depend on design, operating conditions, water quality, and materials—not simply the name of the method.

Electrolysis

An electrical current drives reactions at electrodes. In suitable devices, the hydrogen generated can dissolve into drinking water. Electrode configuration and management of by-products are important.

Gas dissolution

H₂ gas can be introduced into water under conditions that encourage dissolution. Pressure, temperature, contact time, and container sealing affect the final concentration.

Chemical generation

Selected materials can react with water to release H₂. Any dissolved reaction products and the suitability of materials for drinking-water use must be considered.

What matters most? Measured dissolved-H₂ concentration, suitable food-contact materials, water quality, and validated control of reaction by-products.

11 / ELECTROCHEMISTRY

How Does SPE + PEM Electrolysis Work?

SPE commonly means solid polymer electrolyte; PEM means proton exchange membrane. The terms are closely related in many electrolyzer designs. A PEM water-electrolysis cell uses electricity to drive complementary reactions at two electrodes.

1. At the anode

Water can be oxidized to produce oxygen, protons (H⁺), and electrons. In an acidic PEM electrolyzer, the simplified half-reaction is:

2H₂O → O₂ + 4H⁺ + 4e⁻

2. Across the membrane

The PEM conducts protons between electrode regions while helping separate the gas streams. Electrons travel through the external electrical circuit.

3. At the cathode

Protons combine with electrons to form molecular hydrogen:

4H⁺ + 4e⁻ → 2H₂

Overall: 2H₂O → 2H₂ + O₂

Design matters: This diagram represents a conventional PEM electrolyzer principle. Consumer hydrogen-water generators may use different electrode arrangements and gas-management systems. A product label alone does not verify its internal architecture or gas purity.

Illustration of an SPE and PEM electrolyzer showing oxygen, proton transport and hydrogen generation

12 / CONCENTRATION

What Does PPB Mean?

PPB means parts per billion. For dilute H₂ in water, 1,000 ppb is approximately 1 milligram of dissolved hydrogen per liter (1 mg/L).

A concentration reading describes the amount of dissolved gas at the time of measurement. It does not by itself establish a health outcome, and a higher PPB value does not automatically mean a greater clinical benefit.

Hydrogen can leave the water over time. Temperature, agitation, exposure to air, storage materials, and sealing influence how much remains dissolved. Drinking freshly prepared water may reduce losses.

Concentration is not dose: Total H₂ intake also depends on the volume of water consumed. Study findings at one concentration cannot automatically be applied to another product or regimen.

Hydrogen concentration

PPB	Approx. mg/L
500	0.5
1,000	1.0
1,500	1.5
2,000	2.0
3,000	3.0

Conversion assumes a dilute aqueous solution.

13 / AFTER DRINKING

What Happens When You Drink Hydrogen Water?

Hydrogen-rich water still provides ordinary hydration. The additional dissolved H₂ is a separate exposure: some may be absorbed through the gastrointestinal tract, briefly distributed, and then removed, largely through breathing.

01PrepareH₂ is dissolved into drinking water.

02DrinkThe water and dissolved gas are ingested.

03AbsorbSome H₂ crosses the gut lining.

04DiffuseTemporary exposure in tissues may occur.

05ExhaleH₂ is cleared from the body.

It is not established that hydrogen-rich water hydrates everyone better than regular water. Potential effects beyond hydration are still being studied and should be assessed separately from the proven benefits of adequate water intake.

14 / HOW TO READ THE EVIDENCE

What Does Scientific Research Actually Tell Us?

Studies of hydrogen-rich water have investigated exercise, oxidative-stress markers, inflammatory markers, and metabolic measurements. Some have reported favorable changes; others show limited, inconsistent, or no statistically significant effects on particular outcomes.

Laboratory research

Cell experiments help researchers investigate possible mechanisms, but cannot establish that drinking H₂ water improves human health.

Animal research

Animal models can test biological hypotheses, yet results may not translate to people.

Human trials

Randomized, blinded, controlled trials are especially valuable. Sample size, study duration, participant characteristics, and replication all matter.

Why caution is necessary

Many published trials are small or short. Studies use different concentrations and doses, assess different endpoints, and sometimes involve specific patient groups. A statistically significant laboratory marker is not the same as a proven reduction in disease risk.

Large, independent, well-controlled studies are needed before broad health claims can be made.

15 / PUBLISHED HUMAN STUDIES

Explore Real Clinical Research

The following peer-reviewed human trials and research reviews are examples of published research, not proof that a consumer hydrogen-water product treats a medical condition. Each study or review covers its own protocols, which may differ from DALURIS products. Reviews may include trials already listed here and must not be counted as independent additional experiments.

Exercise • Pilot trial • 2012

Hydrogen-rich water and exercise-related muscle fatigue

Researchers: Aoki and colleagues. Participants: 10 male soccer players. Design: double-blind crossover pilot study, with one-week intervention periods.

Reported findings: Lower exercise-associated blood lactate and less early decline in a measured muscle-torque outcome were reported in the hydrogen-water condition. The researchers did not observe significant differences in the reported oxidative-injury markers or creatine kinase.

Limitations: Very small sample, short protocol, and outcomes that do not establish long-term performance or health benefits.

Read the original study on PubMed ↗

Metabolic syndrome • Randomized trial • 2020

24 weeks of high-concentration hydrogen-rich water

Researchers: LeBaron and colleagues. Participants: 60 adults with metabolic syndrome. Design: randomized, double-blind, placebo-controlled trial over 24 weeks.

Reported findings: The authors reported improvements in selected blood lipid, glucose, inflammation, and redox-related measurements compared with placebo.

Limitations: A modest sample in a specific clinical population; high-concentration intervention and findings cannot be generalized to all people or to all hydrogen-water devices. Larger independent trials are required.

Read the original study on PubMed ↗

Metabolic risk • Randomized trial • 2024

Electrolyzed hydrogen water in metabolic and pre-metabolic syndrome

Researchers: A research collaboration including Kochi University. Participants: 181 people. Design: randomized, double-blind, placebo-controlled trial lasting three months.

Reported findings: Some favorable trends were observed, while the significant waist-circumference finding was reported in a subgroup with high physical activity. Several overall comparisons were not statistically significant.

Limitations: Subgroup findings need confirmation; the intervention used a specific commercial system and involved industry collaboration.

Read the original study on PubMed ↗

Systematic review • 2024 • 25 publications

Hydrogen Water: Extra Healthy or a Hoax?

Authors: Dhillon and colleagues. Design: systematic review of 25 publications involving hydrogen-rich water.

Findings: Preliminary research spans exercise, oxidative-stress markers and several health-related outcomes, but results are heterogeneous.

Limitations: Small studies, varied protocols and insufficient evidence for broad health claims.

Read the systematic review on PubMed ↗

Systematic review and meta-analysis • 2024 • 76 participants

Molecular hydrogen and exercise-induced oxidative stress

Authors: Li and colleagues. Design: six studies, seven experiments, 76 participants; included hydrogen-rich water and other H₂ administration methods.

Findings: A modest improvement in measured antioxidant potential was reported, but not a significant reduction in the evaluated oxidative-stress marker.

Limitations: Small evidence base; not exclusive to drinking hydrogen-rich water.

Read the meta-analysis on PubMed ↗

Systematic review and meta-analysis • 2024 • Lipid outcomes

Hydrogen-rich water and blood lipid profiles

Authors: Jamialahmadi and colleagues. Design: systematic review and meta-analysis of clinical trials in people with metabolic disorders.

Findings: The authors evaluated changes in lipid measurements; pooled findings require cautious interpretation.

Limitations: Differences in populations, intervention protocols and study quality prevent general treatment recommendations.

Read the meta-analysis on PubMed ↗

Narrative review • 2024 • Exercise science

Hydrogen-Rich Water to Enhance Exercise Performance

Authors: Zhou and colleagues. Design: review of exercise-related research and proposed mechanisms.

Findings: Summarizes mixed findings across performance outcomes and discusses possible mechanisms.

Limitations: A narrative review does not establish effectiveness or replace larger randomized trials.

Read the review on PubMed ↗

Systematic review and meta-analysis • Liver markers

Hydrogen-rich water and liver enzyme measurements

Design: Review of eight randomized trials with 433 participants across clinical populations.

Findings: Small changes in some measured liver enzymes were reported.

Limitations: Changes in laboratory markers do not establish treatment efficacy for liver disease; more research is needed.

Read the review on PubMed ↗

How to interpret these studies: Their results are preliminary and context-specific. A study of an exercise test or a metabolic marker is not evidence that H₂ water prevents disease, reverses aging, or offers guaranteed benefits. Research summaries should be updated as stronger evidence becomes available.

DALURIS HYDROGEN WATER

Advanced Technology. Everyday Hydration.

DALURIS offers hydrogen-water generators designed to produce molecular hydrogen through electrochemical processes and incorporate H₂ into drinking water. A controlled electrical cycle drives hydrogen generation; the resulting dissolved concentration depends on the specific device, water, and operating conditions.

When evaluating any hydrogen-water generator, important considerations include appropriate drinking-water contact materials, verified performance, electrode design, and responsible handling of electrolysis by-products. Product specifications and actual performance should be assessed for each model.

Our goal is to make hydrogen-water technology easier to understand, while being transparent about what science has—and has not—established about health effects.

View Our Products →

DALURIS Classic, Pro and hydrogen pitcher product collection