Oral contraceptives and breast cancer risk.

Because of the continuing controversy on the breast cancer risks associated with the use of combined oral contraceptives (OCs), the medical literature was reviewed to assess the risks of this cancer to OC users. This review found that the medical literature supports the view that OC use is associated with small increased risks of premenopausal breast cancer. There is no consensus as to which subgroups of women might be at an increased risk.