Reproductive and Women's Health

Female reproductive health encompasses the anatomy, physiology, and clinical management of the female reproductive system across the lifespan, from puberty through menopause. The menstrual cycle is regulated by the hypothalamic-pituitary-ovarian (HPO) axis through a complex feedback loop involving gonadotropin-releasing hormone (GnRH) from the hypothalamus, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary, and estrogen and progesterone from the ovaries. The menstrual cycle averages 28 days and consists of four phases: the menstrual phase (days 1-5, shedding of the endometrial lining), the follicular phase (days 1-13, FSH stimulates follicle maturation and rising estrogen levels), ovulation (approximately day 14, triggered by the LH surge), and the luteal phase (days 15-28, the corpus luteum produces progesterone to maintain the endometrium for potential implantation). If fertilization does not occur, the corpus luteum degenerates, progesterone and estrogen levels drop, and menstruation begins. Estrogen has widespread effects beyond reproduction: it promotes bone density, cardiovascular protection through favorable lipid profiles, and vaginal mucosal integrity. Progesterone stabilizes the endometrium and has a thermogenic effect (raising basal body temperature after ovulation). Cervical cancer screening (Pap smear...