Combined oral contraceptive pill
Women who use combined oral contraceptives are less likely to get cancer of the ovaries. If a woman takes Pill for five years, her risk for getting ovarian cancer is cut in half. Women taking the Pill are also only half as likely to get endometrial cancer than women who have never taken the Pill. The longer a woman uses the Pill, the more her risk of getting endometrial cancer drops. However, women who take the Pill have a higher risk of getting breast cancer and cervical cancer.