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But until the recent explosion of conversation around menopause and hormonal health, precious little consideration had been given to the fact that testosterone is a vital female hormone, too ...
Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of the reproductive stage for the female human. [1] [6] [7] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [8]
Hormone replacement therapy (HRT), also known as menopausal hormone therapy or postmenopausal hormone therapy, is a form of hormone therapy used to treat symptoms associated with female menopause. [ 1 ] [ 2 ] Effects of menopause can include symptoms such as hot flashes , accelerated skin aging, vaginal dryness , decreased muscle mass , and ...
At menopause, only 1,000 follicles remain. It seems likely that early menopause occurs for women with low populations at birth, and late menopause occurs for women with high populations at birth, but there is as yet no clinical evidence for this. [4] The process by which primordial cells 'wake up' is known as initial recruitment.
The average age of a girl's first period is 12 to 13 (12.5 years in the United States, [6] 12.72 in Canada, [7] 12.9 in the UK [8]) but, in postmenarchal girls, about 80% of the cycles are anovulatory in the first year after menarche, which declines to 50% in the third year, and to 10% by the sixth. [9]
Menopause results from having too few ovarian follicles to produce enough estrogen to maintain the ovarian-pituitary-hypothalamic loop, which results in the cessation of menses and the beginning of menopause. Human females are born with approximately a million oocytes, and approximately 400 oocytes are lost to ovulation throughout life. [32] [33]