GNMT (Glycine N-Methyltransferase) is a crucial enzyme involved in methionine metabolism and liver detoxification. It helps regulate homocysteine levels by converting excess methionine into sarcosine, preventing harmful accumulation of methionine and promoting liver health. Dysfunction of GNMT is linked to liver disorders such as fatty liver disease and liver cancer. Ongoing research underscores GNMT’s protective role against liver toxicity and its potential as a biomarker for evaluating liver health.