ORs (95% CIs) of MetS for rs1799964 T>C by metals. The logistic regression model was built as logit [p(MetS)/1 − p(MetS)] = β0 + βM,j Mj + βSNP,1i SNP1i + βSNP,2i SNP2i + βc Covariates + ε. Adjusted covariates included age, gender, smoking, and drinking alcohol. The prevalence of MetS with metals was increased in Cu only (OR = 1.001, 95% CI: 1.000, 1.001). Genotype CC was associated with an elevated risk of MetS, and the OR was 2.14 (95% CI: 1.02, 4.53) adjusting for Co, OR = 2.16 (95% CI: 1.02, 4.57) adjusting for Cu, OR = 2.16 (95% CI: 1.03, 4.56) adjusting for Zn, OR = 2.40 (95% CI: 1.16, 4.98) adjusting for Se, OR = 2.26 (95% CI: 1.09, 4.68) adjusting for As, and OR = 2.30 (95% CI: 1.11, 4.77) adjusting for Pb.