Some menstrual problems can run in families. For example, if your sister or mother has been diagnosed with polycystic ovary syndrome, you face an increased risk for the same condition. Researchers are investigating whether genetic mutations play a role in this disorder, which is characterized by cysts on the ovaries, irregular periods, and signs associated with elevated testosterone (such as abundant facial hair) due to a hormonal imbalance.
Menorrhagia (abnormally heavy periods) can be caused by inherited blood-clotting disorders such as von Willebrand's disease. However, heavy periods can also be caused by other things that have nothing to do with heredity, such as intrauterine devices (IUDs) and some medications.
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