GPT and diabetes mellitus: In the between-group comparison, age (p < 0.001), BMI (p < 0.001), waist circumference (p < 0.001), glucose (p < 0.001), TG (p = 0.006), total cholesterol (p = 0.037), AST (p < 0.001), ALT (p < 0.001), and GGT (p = 0.008) were significantly higher in the IFG-DM group than in the IFG-IFG group.