Migraine sufferers take note! In an odd twist of hormone level functions, it looks like your pain might be protecting you. A new study discovered that women who have a history of migraines also have a 30 percent lower risk for developing breast cancer. Cancer researchers know that high levels of estrogen in the blood can increase a woman's risk for breast cancer. The thing about women who suffer from migraines is that they generally have low levels of estrogen. Even though the low levels of this hormone may trigger these agonizing episodes, it may also act as protection from the disease. This new data doesn't do much to help stop migraines, but it may help point researchers in new directions when it comes to finding ways to preventing certain types of hormone-related breast cancer.