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Menopause, also known as the climacteric, is the time when menstrual periods permanently stop, marking the end of reproduction. [1] [6] [7] It typically occurs between the ages of 45 and 55, although the exact timing can vary. [8]
The menopause - and the years leading up to it - affect women in different ways. The brain, periods, skin, muscles and emotions are all affected by falling levels of oestrogen.
Menopause is a nearly universal experience for women who live to middle age. In the United States, an estimated 1.3 million women enter menopause every year. Around 90% of women experience ...
“Black women are 50% more likely to have vasomotor symptoms such as night sweats and hot flashes, experience symptoms for on average 3.5 more years than White women, and are less likely to get ...
Longevity is a central determinant of the grandmother hypothesis; selection for greater longevity in males, as suggested by the patriarch hypothesis, could extend female lifespan, provided such a gene is not on the Y chromosome. Males have much to gain from late reproduction, even if they die shortly after conception. [14]
The grandmother hypothesis is a hypothesis to explain the existence of menopause in human life history by identifying the adaptive value of extended kin networking. It builds on the previously postulated "mother hypothesis" which states that as mothers age, the costs of reproducing become greater, and energy devoted to those activities would be better spent helping her offspring in their ...
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