FSH (Follicle-Stimulating Hormone) is a gonadotropin hormone produced by the pituitary gland that plays essential roles in sexual development and reproduction in both men and women.
FSH in Women:
FSH stimulates the growth of ovarian follicles, each containing an immature egg. During the first half of the menstrual cycle, FSH levels rise, causing several follicles to develop. Usually one becomes dominant and eventually releases an egg (ovulation). FSH levels are used to assess ovarian reserve and fertility.
FSH in Men:
In men, FSH stimulates the testes to produce sperm. It works alongside luteinizing hormone (LH) to maintain testosterone production and healthy sperm development. FSH levels remain relatively constant in men compared to the cyclical pattern in women.
FSH Testing:
Doctors measure FSH levels to diagnose fertility issues, assess menopause status, or evaluate pituitary function. High FSH in women may indicate diminished ovarian reserve or menopause, while low FSH can suggest pituitary or hypothalamic problems.
