Quercetin has been reported to treat non-alcoholic fatty liver disease (NAFLD) by decreasing the level of liver enzymes, such as alanine transaminase (ALT) and aspartate transaminase (AST) (Figure 2), oxidative stress, and inflammation, and by regenerating altered metabolites and gut microbiota [44,68]. Here, GPT is linked to metabolic dysfunction-associated steatotic liver disease.