Follicular Stimulating Hormone Blood Tests

Follicle-stimulating hormone (FSH) is a gonadotropin, a type of hormone produced by the pituitary gland, which plays a crucial role in the reproductive systems of both men and women.

In women, FSH is key to the menstrual cycle and fertility:

Ovarian Follicle Development: FSH stimulates the growth of ovarian follicles in the ovary before the release of an egg at ovulation.

Estradiol Production: The developing follicles produce estradiol, an estrogen, which is crucial for the reproductive cycle.

Menstrual Cycle Regulation: FSH levels vary throughout the menstrual cycle and are highest just before ovulation.

In men, FSH is essential for the production and health of sperm:

Sperm Production: FSH stimulates the Sertoli cells in the testes, which are crucial for spermatogenesis (the production of sperm).

Testicular Health: It helps maintain the size and health of the testes.

FSH levels are used as an important diagnostic tool in assessing fertility and reproductive health. In women, abnormal FSH levels can indicate issues such as ovarian failure, polycystic ovary syndrome (PCOS), or menopause. In men, abnormal levels can indicate problems with the testes or with the hypothalamic-pituitary-gonadal axis, which can affect sperm production and overall fertility.

Monitoring FSH levels can provide valuable information in the evaluation and treatment of infertility, as well as in understanding other reproductive health issues.

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