Perimenopause, or pre menopause is the time in a women’s life when her ovaries start to produce less estrogen. Pre menopause lasts until menopause when the ovaries stop releasing eggs. In the last one or two years of pre menopause the decline of estrogen increases and many women experience menopausal symptoms. When does pre menopause start? It usually starts in a women’s 40, but can start as early as a women’s 30’s. How long does pre menopause last? It varies with each individual. The average is four year, but for some it may last a few months or continue for 10 years. Pre menopause officially ends after the first year a women has gone without having her period. Menopause on average occurs when women are 50-51 years of age, so the duration of pre menopause depends on when a women starts showing signs or menopausal symptoms. Read more »