In line with these results, a recent prospective study on 26 patients affected by nonalcoholic fatty liver disease (NAFLD) who adhered to a vegan diet for six months showed improved liver enzymes (e.g., ALT, AST and GGT values), and normalization of liver function tests as a whole was observed in 77% of patients [131]. This evidence concerns the gene GPT and metabolic dysfunction-associated steatotic liver disease.