Which hormone decreases most rapidly after surgical menopause?
Estrogen
Surgical menopause follows removal of both ovaries (bilateral oophorectomy).
The ovaries are the main source of oestrogen, so oestrogen levels fall abruptly and sharply, causing sudden hot flushes, vaginal dryness and an increased risk of osteoporosis.
Progesterone also falls but is already low outside the luteal phase; thyroxine and insulin are not ovarian hormones.
Hence, Estrogen.
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