Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Green tea (Camellia sinensis) has been traditionally consumed in many Asian cultures and, in recent decades, has been studied for its potential health benefits, including effects on the hepatic (liver) system. The key bioactive components in green tea are catechins, particularly epigallocatechin-3-gallate (EGCG), which exhibit antioxidant, anti-inflammatory, and hepatoprotective properties in preclinical models.

Scientific studies have shown that green tea catechins can mitigate oxidative stress and reduce liver inflammation in animal models of liver injury, including non-alcoholic fatty liver disease (NAFLD) and chemically induced hepatotoxicity. Some small-scale human studies and clinical trials have indicated that green tea extract supplementation may improve liver enzyme levels and reduce markers of liver fat in individuals with NAFLD or metabolic syndrome. However, results are mixed, and high doses of concentrated green tea extracts have, in rare cases, been associated with hepatotoxicity.

Overall, while there is promising evidence from laboratory and animal research, and some supportive but limited clinical data, the use of green tea to support liver health is not yet fully validated by large-scale human trials. Thus, the current scientific evidence justifies a moderate rating.

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