COVID-19と分子状水素吸入に関する考察
This letter discusses the potential relevance of molecular hydrogen (H2) inhalation in the context of COVID-19. H2 is recognized for its antioxidant and anti-inflammatory properties, and the author explores whether these characteristics may be relevant to respiratory complications and oxidative stress associated with COVID-19 infection. No detailed abstract is available for this publication, but the correspondence addresses the scientific rationale for considering H2 inhalation in this disease context.
H2 may reduce oxidative stress and inflammatory responses associated with COVID-19 through its established antioxidant and anti-inflammatory properties.
For inhalation applications of molecular hydrogen, the lower flammability limit (LFL) deserves careful handling. The classical 4% figure applies to closed-system mixtures; the practical inhalation-environment threshold is 10%. Even pure-hydrogen output (the UFL 75% paradox) passes through the flammable range at the air–gas boundary. High-concentration (66% / 100%) inhalers are documented in the Japanese Consumer Affairs Agency accident-information database and are not recommended.
See also:
https://h2-papers.org/en/papers/32865158