Pill halves risk of endometrial cancer

Use of combined oral contraceptives halves a woman's lifetime risk of endometrial cancer, a major review suggests.

Cancer researchers have made the claim based on the pooling of epidemiological data from 27,000 women with endometrial cancer.

In a review published in Lancet Oncology, they report that every five years of oral contraceptive use is associated with a 24% reduction in relative risk of endometrial cancer, and the reduction in risk increases with the duration of oral contraceptive use.

The researchers estimate that using oral contraceptives for 10 years