The process in a woman of discharging blood and other material from the lining of the uterus at intervals of about one lunar month from puberty until the menopause, except during pregnancy.
- Women around the age of 50 are usually considered to be past their menopause if menstruation has not occurred for a year.
- Typically, menstruation and ovulation cease with the menopause, at around age 51 or 52.
- Women have higher iron needs because of physiological losses through menstruation and pregnancy.
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