Progesterone is a hormone produced by the ovaries in the last two weeks of the menstrual cycle after ovulation. It prepares the lining of the uterus (endometrium) so that a fertilized egg can implant in it. When ovulation stops, progesterone is no longer produced.
As the menopause transition is completed, a shift in the balance of hormones occurs and women produce much less estradiol and no progesterone from their ovaries.
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Our Bodies, Ourselves: Menopause
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