Why does elevated luteinizing hormone (LH) inhibit follicle-stimulating hormone (FSH) secretion during the luteal phase of the menstrual cycle?

💡 Explanation

High progesterone levels during the luteal phase cause negative feedback on the hypothalamus and pituitary gland, thus reducing GnRH and FSH secretion, because the corpus luteum needs to maintain itself and prepare the uterine lining for implantation; therefore, this progesterone effect occurs, rather than stimulation by estrogen or inhibin modulation.

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