PRL and metabolic syndrome: Cross-sectional age-adjusted regression models showed an inverse association between PRL and MetS risk in women (Q1 vs. Q4: RR, 1.32; 95% CI, 1.04 – 1.66), but not in men (Q1 vs. Q4: RR, 1.15; 95% CI, 0.97 – 1.37).