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    Molecular Hydrogen – Benefits for Health and Performance

    Molecular hydrogen (H2 or MH) is the most lightweight gas and the lightest and most abundant chemical element. It can act as an antioxidant by suppressing free radical chain reactions, thereby reducing the production of reactive oxygen species (ROS). The therapeutic application of H2 as a free radical catalyzer was first documented in the 1970s. It was hypothesized that the underlying mechanism was through hydroxyl radicals scavenging by exothermic reaction (a chemical reaction in which less energy is needed to break bonds in the reactants than is released when new bonds form in the products) of H2 + ·OH = H2O + H· followed by H· + O2- = HO2- reaction using hyperbaric hydrogen therapy. 

    The antioxidant advantages of molecular hydrogen include:

    1. High biomembrane penetration and intracellular diffusion capability enable it to reach subcellular compartments like mitochondria
    2. Selectively scavenging the deleterious hydroxyl radical (·OH) while preserving other important reactive oxygen and nitrogen species for normal signaling regulation

    Since the landmark publication in Nature Medicine in 2007 (by Ohsawa et al.), research on molecular hydrogen medicine has been blooming worldwide. In 15 years of molecular hydrogen research, there have been over 2,000 published scientific articles on the health benefits of various methods of hydrogen consumption. Publications on human trials using hydrogen as a therapeutic agent are close to 130. Three administration forms of molecular hydrogen, namely 1–4 % hydrogen gas inhalation, hydrogen-rich saline intraperitoneal injection/intravenous infusion and oral intake of hydrogen-saturated water, have been commonly used in hydrogen medical research. About half of them make up for drinking hydrogen water. Based on research by Liu et al. (2014) done on rats, hydrogen concentration reaches its peak 5 min after oral (drinking) administration.

    Mechanisms of the action of molecular hydrogen in the body

    1. Anti-inflammatory effects
    2. Regulation of oxidative stress
      1. It may act as a mitohormetic effector to mediate the beneficial effects on the body through hormetic mechanisms (mitohormesis)
    3. Regulation of endoplasmic reticulum stress
    4. Regulation of mitochondria
      1. Modulates mitochondrial bioenergetics
    5. Immune system effects
      1. Reduce the production of immune-active substances
    6. Effects on cell death
      1. Prevention of apoptosis
      2. Regulation of autophagy
      3. Regulation of pyroptosis (an inflammatory programmed cell death pathway that protects multicellular hosts from invasive pathogens, including microbial infections)
      4. Regulation of ferroptosis (a form of regulated cell death)

     

    Molecular Hydrogen – Benefits for Health and Performance

    Image: Biological effects of H2.

    Source: Yang, M. et al. (2020). Hydrogen: a novel option in human disease treatment. Oxidative Medicine and Cellular Longevity 2020: 8384742.

    Molecular hydrogen also has remarkable preventive and therapeutic applications in various diseases and organ systems (see table below). However, most of the studies and their results represented in the table are from animal models.


    Organ system

    Molecular hydrogen mechanisms

    Respiratory system

    • Regulates IL-2, IL-7, IL-10, and TNF-α
    • Increases surfactant proteins
    • Reverses EMT and increases E-cadherin


    Cardiovascular system

    • Suppresses macrophage infiltration, TNF-α expression, and vascular aging
    • Inhibits cardiomyocyte apoptosis
    • Decreases MDA, 8-OHdG, and IL-1β

    Nervous system

    • Reduces loss of dopaminergic neurons and improves nigrostriatal degeneration
    • Reduces neurological deficits and endothelial cell injury

    Digestive system

    • Induces HO-1 and Sirt1 expression
    • Activates the A2A receptor-mediated PI3K-Akt pathway
    • Inhibits bile acid oxidation

    Reproductive system

    • Inhibits cell proliferation and improves SOD
    • Improves serum levels of anti-Müllerian hormone
    • Improves serum testosterone level

    Urinary system

    • Increases Il-4 and Il-13 and promotes macrophage polarization to the M2 type
    • Activates the Keap1/Nrf2 signaling pathway
    • Prevents HK-2 cells from undergoing EMT

    Motor system (the set of central and peripheral structures in the nervous system that support motor functions)

    • Reduces blood lactate levels
    • Suppresses serum 8-OHdG levels (oxidative stress)

    Sensory system

    • Reduces wound area and levels of proinflammatory cytokines
    • Improves auditory brainstem response

    Cancer

    • Controls cancer progression and improves quality-of-life
    • Reduces proportion of terminal PD-1+ CD8+ T cells

    Metabolic syndrome

    • Decreases LDL and increases high-density lipoprotein
    • Decreases glucose and insulin levels
    • Stimulates energy metabolism

    Recent human research findings of molecular hydrogen on metabolic health, physical performance and recovery

    These findings below are from using molecular hydrogen enriched water. If some other administration way is used, it has been mentioned separately. 

    Athletic performance and recovery:

    Metabolic health:

    Conclusion

    The scientific evidence for the broad biological effects of molecular hydrogen has been increasing over the past 15 years. MH regulates inflammation, oxidative stress, autophagy, programmed cell death (apoptosis), and the aging process as well as improves physical performance and recovery. Animal experiments and clinical trials have demonstrated the protective effects of hydrogen on many organs and systems. However, the exact and detailed molecular mechanisms underlying the protective effects of molecular hydrogen remain to be validated. 

    While other hormetic stressors need to be monitored to prevent them from becoming harmful (such as heat, cold, exercise and many chemicals), the safety of molecular hydrogen is extremely high. The safest and easiest way to use molecular hydrogen is by taking oral water-dissolving H2 tablets. 

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    Have you tried molecular hydrogen? Tell us in the comments!

    We recommend using DrinkHRW molecular hydrogen tablets, which is the best research molecular hydrogen product in the market.


    This article is an excerpt from the forthcoming Resilient Being Book. You can pre-order it here!

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