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Thursday, November 6, 2008

Migraines Lower Breast Cancer Risk: Study

A history of migraine headaches can reduce a woman’s risk of breast cancer, Reuters reports. The odd correlation has emerged from research done by cancer doctors in Seattle. “Overall, women who had a history of migraines had a 30% lower risk of breast cancer compared to women who did not have a history of such headaches,” a researcher said.

The association is hormonal: Common forms of breast cancer are caused by excess estrogen; migraines result from estrogen deficiency. “While these results need to be interpreted with caution,” the researcher said, “they point to a possible new factor that may be related to breast-cancer risk.” The study was of post-menopausal women; migraines are more common in pre-menopausal women, suggesting a lasting effect.

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