A new study found that women who take birth control pills are 31 percent less at risk of endometrial cancer than women who had never used the pill. Remarkably, with longer usage the effect was magnified: for every five years on the pill, a woman’s risk decreased by 24 percent, and after 15 years the risk of endometrial cancer dropped to just one percent. The numbers are surprising, but the study’s size mean these results cannot be easily overlooked. It combined the data of 36 earlier studies, covering more than 140,000 women. Endometrial cancer accounts for six percent of all cancers in women, and the authors of the study estimate that the pill has prevented some 200,000 cases of endometrial cancer in the past decade alone. The fight for accessible birth control for women continues, but denying access to the pill has become that much harder to defend.
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