Transplants of ovarian tissue between identical twins have been successful in restoring fertility woman sex meeting basel. [11] During this time, women often experience hot flashes; these typically last from 30 seconds to ten minutes and may be associated with shivering, sweating, and reddening of the skin. , may partially supplement (or even obviate) the use of medications for some women. Some believe a problem concerning the grandmother hypothesis is that it requires a history of female philopatry while in the present day the majority of hunter-gatherer societies are patriarchal. An enzyme system is present in oocytes that ordinarily accurately repairs DNA double-strand breaks. Meiosis is the general process by which germ cells are formed in all sexual eukaryotes; it appears to be an adaptation for efficiently removing damages in germ line DNA. The various biological factors associated with menopause had the effect of male members of the species investing their effort with the most viable of potential female mates. Before menopause, a woman s periods typically become irregular, [11] which means that periods may be longer or shorter in duration or be lighter or heavier in the amount of flow. Ethnicity and geography play roles in the experience of menopause.

The reason for this delay in declaring postmenopause is because periods are usually erratic at this time of life. [ not considered to be reliable guides to a woman s exact menopausal status woman sex meeting basel. Other therapies[edit] Lack of lubrication is a common problem during and after perimenopause. For some women, the menopausal transition represents a major life change, similar to menarche in the magnitude of its social and psychological significance. The functional disorders often significantly speed up the menopausal process. 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. It has been also observed that the vasomotor symptoms differ during early perimenopause and late menopausal transition and it is possible that they are caused by a different mechanism. At this point a woman is considered infertile; however, the possibility of becoming pregnant has usually been very low (but not quite zero) for a number of years before this point is reached. An early menopause can be related to cigarette smoking, higher body mass index, racial and ethnic factors, illnesses, and the surgical removal of the ovaries, with or without the removal of the uterus.

Indeed, analysis of historical data found that the length of a female s post-reproductive lifespan was reflected in the reproductive success of her offspring and the survival of her grandchildren. Rates of premature menopause have been found to be significantly higher in fraternal and identical twins; approximately 5% of twins reach menopause before the age of 40. [9] Following the removal of the uterus, symptoms typically occur earlier, at an average of 45 years of age..
. In contrast to the sudden fall in estradiol during menopause, the levels of total and free testosterone, as well as dehydroepiandrosterone sulfate (DHEAS) and androstenedione appear to decline more or less steadily with age. So although grandmothers might not be necessary during good times, many grandchildren cannot survive without them during times of famine. [ page needed] One problem with this hypothesis is that we would expect to see menopause exhibited in the animal kingdom. ...

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