GPT and fatty liver disease: Studies consistently using EVOO, such as those by Quetglas-Llabrés et al., Marin-Alejandre et al. and Ristic-Medic et al., reported significant reductions in hepatic steatosis, liver enzymes (ALT, AST, GGT), and systemic oxidative stress markers, outcomes not as prominent in studies where the type of olive oil was unspecified.