glutathione peroxidase and reductase Pathways Glutathione reductase - Wikipedia

This methane SIBO weight gain is something that I experienced first hand, gaining over 10 kg in the space of two months before testing positive for methane SIBO (and then losing it again post-treatment)

Copper is a component of the enzyme tyrosinase, which is involved in the production of melanin, the pigment responsible for hair color

2 Data suggest that plasma and hepatic GSH also are decreased in patients with acute viral hepatitis, or chronic liver injury from a variety of causes such as chronic hepatitis, nonalcoholic liver cirrhosis, and alcoholic liver disease

Tissue-related signaling mechanisms

PMID 10696569