GGTLC1 and metabolic syndrome: The prevalence of metabolic dysregulation (e.g., hypertension, dyslipidemia, and Impaired glucose intolerance [IGT]) and the level of liver enzymes (e.g., ALT, AST, and gamma-glutamyl transpeptidase [GGT]) were the highest in Group 3 and the lowest in Group 1 (all p < 0.001).