[Risk of breast cancer and oral contraceptives].

Oral contraceptive pills have been made available to women since the beginning of the 1960s. The pill (oral contraceptive pill, ovulation inhibitor) is the most sure of all contraceptive methods. With the beginning of applicating the pill, there had been fear of increasing breast cancer risk due to contained hormones. It is assumed that every third woman had ever taken oral contraceptive pills in her life. Yet, breast cancer incidence did not increase world-wide in an extent as would have been expected if the pill really were operating in a breast cancer promoting manner.