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The 21 pages that link to Follicle-stimulating hormone, each with the reason it gives.

• Menstrual cycleRelated: Its early-cycle rise helps recruit follicles for that cycle.

• OvulationRelated: It helps follicles grow before one becomes ready to ovulate.

• SpermatogenesisRelated: Its signaling helps Sertoli cells sustain germ-cell development.

• Hypothalamic–pituitary–gonadal axisRelated: It works alongside luteinizing hormone to regulate gonadal function.

• MenopauseRelated: As ovarian response falls, circulating levels typically rise during the transition.

• Luteinizing hormoneRelated: FSH acts alongside LH but has distinct roles in gonadal function.

• HypogonadismRelated: Its level and function help assess reproductive impairment alongside sex-hormone levels.

• Gonadotropin-releasing hormoneRelated: GnRH also drives its secretion, coordinating gamete development with reproductive cycles.

• OogenesisRelated: It helps drive follicular growth around developing oocytes.

• Male infertilityRelated: Its level can help assess hormonal causes of impaired sperm production.

• AmenorrheaRelated: Its blood level can help distinguish ovarian causes from central hormone suppression.

• Ovarian follicleRelated: Its changing levels help recruit and sustain developing follicles.

• Testosterone replacement therapyRelated: Its measurement helps evaluate fertility and testicular function before treatment.

• AnovulationRelated: Insufficient stimulation can prevent follicles from maturing enough to ovulate.

• Delayed pubertyRelated: Its level, interpreted with other hormones, helps locate the cause of delayed development.

• LevonorgestrelRelated: Its changing levels are part of the cycle that oral levonorgestrel can interrupt before ovulation.

• Ovarian hyperstimulation syndromeRelated: Injected FSH recruits multiple follicles, increasing the chance of an exaggerated response.

• Primary ovarian insufficiencyRelated: Its level often rises when the ovaries respond less effectively.

• ClomifeneRelated: Higher FSH helps recruit and mature ovarian follicles during treatment.