Principal coordinate analysis (PCoA) of the gut microbiome before the hydrogen supplementation (IMAGE)

Hiroshima University

Principal coordinate analysis (PCoA) of the gut microbiome before the hydrogen supplementation

Caption

Principal coordinate analysis (PCoA) of the gut microbiome before the intervention. Placebo (left) and hydrogen (right) groups, respectively. In the hydrogen group, there is distinct clustering between individuals classified as ‘improved’ or ‘not improved’ based on whether their mean change in sleep-quality VAS (Visual Analog Scale) indicated greater or lesser improvement than the median. (Fumiko Higashikawa, Keishi Kanno. Scientific Reports. July 27, 2026)

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Fumiko Higashikawa, Keishi Kanno. Scientific Reports. July 27, 2026

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