Contraceptive pill cuts ovarian cancer risk, study says

The Guardian: "The contraceptive pill substantially reduces women's risk of ovarian cancer and continues to protect them for at least 30 years after they stop taking it, according to a big scientific analysis published today.
The research, by Oxford University epidemiologists, suggests that the risk of ovarian cancer is cut by 20% for every five years that a woman has been on the pill. Those who take it for 15 years cut their risk by half. Ovarian cancer is hard to detect and kills two-thirds of those who get it."