Effects of Menopause
The level of estrogen — the main female hormone — in your body rises and falls unevenly during perimenopause. Your menstrual cycles may lengthen or shorten, and you may begin having menstrual cycles in which your ovaries don't release an egg (ovulate).
A total of 4,116 women (46.7%) reported experiencing at least one of the listed menopausal symptoms (anxiety, decreased interest in sex, depression, forgetfulness, heart racing or pounding, hot flashes, insomnia/difficulty sleeping, joint stiffness, mood changes, night sweats, urine leakage, or vaginal dryness). The average age of menopause is 51, and perimenopause symptoms typically begin about four years before your final period. Most women start to notice perimenopause symptoms in their 40s. Information from Mayo Clinic.