How do birth control pills affect your risk of breast cancer?

Depends: You are thought to have a slight increased risk if you use the pill for over 10 years, although, some studies show that people who use birth control pills and develop breast cancer have a less aggressive form.

Unlikely: There is no scientific data to show that birth control pills contribute to breast cancer. However, once a woman has had breast cancer taking birth control pills may increase her risk of recurrence.