PRL and Insulin resistance: BD, bipolar disorder; HC, healthy controls; LH, luteinizing hormone; FSH, follicle-stimulating hormone; PRL, prolactin; E2, estradiol; TST II, testosterone II; PRGE, progesterone; AMH, anti-Müllerian hormone; TG, triglyceride; CHOL, cholesterol; HDL-c, high-density lipoprotein cholesterol; LDL-c, low-density lipoprotein cholesterol; FBG, fasting blood glucose; IRI, Insulin Resistance Index