Appearance of Psychophysiological Effect of Hydrogen Inhalation and Effect of Continuous Use on the Skin Properties

Abstract

We first investigated psychosomatic effects of hydrogen inhalation in humans. Psychologically, anti-stress action and an increase in ability to concentrate were observed. Physiologically, it was suggested that hydrogen inhalation increases the sedative effects and brain activity by suppressing sympathetic nervous activity. Thus, the effects of continuous hydrogen inhalation for 2 weeks on the psychological effects and skin properties were investigated. In addition to reduction of awareness of stress and negative emotions, improvement of skin firmness and blotches was observed. These findings suggested that continuous hydrogen inhalation exhibits regulating effects on skin conditions.