Cyclical breast pain, also called mastalgia, is such a common premenstrual symptom that many women and quite a few doctors - consider it to be a "normal" part of life. Surveys have shown that at least 60% of women under 55 experience some degree of discomfort in their breasts each month, vyhile 15% to 25% experience pain that is severe enough to be "life-altering," because it interferes with regular activities.
There are many theories regarding the cause, but the best evidence points to a heightened sensitivity of breast tissue to the reproductive hormones prolactin and/or estrogen. Environmental estrogens, synthetic compounds found in plastics, pesticides and cosmetics, may also playa role in that they mimic some of the effects of estrogen in the body.
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