A Answers (3)
Mehmet Oz, MD, Cardiology, answeredNear menopause, the number of ovarian follicles declines, and the follicles become less responsive to luteinizing hormone (LH) and follicle-stimulating hormone (FSH), thereby producing less estrogen. Ovulation and menstruation become more irregular and eventually stop, which is menopause. Watch the animation to learn more about menopause.
Marjorie Nolan Cohn, Nutrition & Dietetics, answered on behalf of Academy of Nutrition and Dietetics
Menopause is the time in a woman's life when her periods (menstruation) eventually stop and the body goes through changes that no longer allow for pregnant. It is a natural event that normally occurs in women age 45 - 55. And for some women can be incredibly upsetting and emotionally traumatic. Not to mention the sometimes extreme side effects of menopause that can last years.
During menopause, a woman's ovaries stop making eggs and they produce less estrogen and progesterone. Changes in these hormones cause menopause symptoms. Periods occur less often and eventually stop. Sometimes it happens suddenly. Most of the time, periods slowly stop over time and symptoms will go on for years. Menopause is considered complete when you have not had a period for 1 year. This is called postmenopause. Women who are postmenopausal can no longer get pregnant.
Michael T Murray, Naturopathic Medicine, answered
Menopause occurs when there are no longer any active eggs left in the ovaries due to normal aging or as a result of chemotherapy or surgery. At birth, there are about 1 million eggs (ova). This number drops to around 300,000 or 400,000 at puberty, but only about 400 of these ova will actually mature during the reproductive years. By the time a woman reaches the age of 50, few eggs remain. With menopause, the absence of active follicles (the cellular housings of the eggs) results in reduced production of estrogen and progesterone. In response to this drop in estrogen, the pituitary gland increases secretion of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The fluctuation of hormones, particularly the decline in estrogen and progesterone, is the cause of many perimenopausal and menopausal complaints.