For example, Zhang et al. shows the positive associations between MetS risk and continuous unit (per 5 unit) of liver enzyme (ALT, AST, γ-glutamyl transpeptidase, and alkaline phosphatase): the smallest effect size was for alkaline phosphatase [odds ratio (OR): 1.09, 95% confidence interval (CI): 1.08–1.10] and the largest was for ALT (OR: 1.41, 95% CI: 1.38–1.43). Here, GPT is linked to metabolic syndrome.