Menopause: what and when is menopause?
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Menopause- what happens?
All women will experience the menopause. Natural menopause takes place when the ovaries become unable to produce the hormones estrogen and progesterone. Menopause can also occur when the ovaries are damaged by specific treatment such as chemotherapy or radiotherapy, or when the ovaries are removed, often at the time of a hysterectomy. Ovaries naturally fail to produce estrogen and progesterone when they have few remaining egg cells; the maximum number of egg cells in the ovaries is present before birth, with a reduced number already at birth, gradual reduction from puberty, and a rapid decline from 40 onwards. With less egg cells, the ovaries become less able to respond to hormones from the pituitary gland in the brain: follicle stimulating hormone (FSH) and luteinising hormone (LH) and less estrogen is produced. Levels of FSH and LH subsequently rise and a measurement of FSH is sometimes used to diagnose menopause. The resulting low, and changing levels of ...
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