Heavy Menstrual Periods
Many women feel that their periods are heavy. Doctors consider a woman's menstrual periods to be genuinely "heavy" when they meet any one of three criteria:
It's normal for menstrual flow and duration to vary somewhat from period to period. If you have a repeated, long-lasting increase in monthly flow then you should be evaluated by a doctor. About ten percent of women have heavy periods, also called "menorrhagia." Some of the more common causes include hormone changes, thyroid problems, growths or other changes in the uterus, problems with your blood's ability to clot, or a pelvic infection.
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