Birth control may be putting women at risk for breast cancer

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Newer formulations of birth control pills appear the carry the same risk of breast cancer as older versions.

A large study in Denmark found using hormone based contraceptives for at least five years increases the risk for breast cancer by 20 percent.

However, the absolute risk for developing breast cancer for most women is extremely low.

Overall, there was one extra case of breast cancer for every 7,600 women using hormonal contraception for a year. That includes pills, patches, rings, implants or injections.

Other studies have shown hormonal birth control may lower the risk for ovarian and endometrial cancer.