Follicle-stimulating hormone (FSH) plays a critical role in male reproductive physiology by regulating Sertoli cell function and supporting spermatogenesis. Unlike testosterone, which primarily influences sexual characteristics, FSH directly affects sperm production and maturation.
Disorders of FSH secretion or receptor sensitivity may result in impaired spermatogenesis despite normal testosterone levels. Elevated FSH levels often indicate primary testicular failure, while low or normal levels in the presence of infertility may suggest hypothalamic or pituitary dysfunction.
FSH measurement is therefore an essential component of hormonal evaluation in infertile men and provides erotic valuable prognostic information regarding testicular function.
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