A recent study involving African American women found that those who use oral contraceptives have a greater risk of developing breast cancer, UPI
Researchers used data from the Black Women's Health Study, and tracked 53,848 women from the study over a 12-year period.
Over that time, 789 cases of breast cancer developed and researchers obtained information regarding the receptor status of each case.
They differentiated between estrogen receptor positive and estrogen receptor negative forms of breast cancer and found that women who used oral contraceptives were 65 percent more likely to develop the estrogen receptor negative form of the disease.
Scientists also found that women who had been using the contraceptives five years before being diagnosed, or had been using the birth control for 10 or more years at some point during their life, had a higher risk of developing the illness as well.
According to the American Cancer Society, about 207,000 new cases of invasive breast cancer will be diagnosed this year in the United States. However, the incidence rates of the disease decreased 2 percent every year from 1999 to 2006.