GSTM1 and metabolic syndrome: As displayed in Figures 1, 2, the AUROCs of ALT and Hb for MetS were 0.61 (95%CI:0.60–0.62, p < 0.001), 0.55 (95%CI:0.54–0.56, p < 0.001) in men and 0.59 (95%CI:0.58–0.60, p = 0.004), 0.53 (95%CI: 0.52–0.54, p = 0.004) in women, respectively.