Continental climates are often found to be relatively dry. Most of the moisture carried by air masses originating over ocean regions far away is lost as rainfall earlier in its journey. Regions of the Earth that have continental climates include Siberia and central Russia, and much of North America.
A. Perimenopause, or menopause transition, begins several years before menopause. It's the time when the ovaries gradually begin to make less estrogen. It usually starts in a woman's 40s, but can start in her 30s or even earlier.Perimenopause lasts up until menopause, the point when the ovaries stop releasing eggs. In the last 1 to 2 years of perimenopause, this drop in estrogen speeds up. At this stage, many women have menopause symptoms.. Perimenopause, or menopause transition, begins several years before menopause. It's the time when the ovaries gradually begin to make less estrogen. It usually starts in a woman's 40s, but can start in her 30s or even earlier.
The Beginning of Menopause. So, when does menopause start for most women? There is no set age when menstruation stops as the end of a woman's fertile period is an individual experience. There are averages however. According to the National Institute of Aging the average age that a woman has her last period is 51. This does not mean that menopause will not occur during a woman's forties, or even thirties in some cases. Some women may menstruate well into their fifties. There are factors that may contribute to an early menopause.