The IUD is much more likely to have an abortifacient effect than to prevent cancer

Bioethics, Cancer, Woman's Health
A news story out today contends that when a woman uses an Intrauterine Device (IUD) for birth control this “is associated with a 40% reduction in the risk of endometrial cancer.” Yet, do not be deceived by this alluring headline. The news stories (and the physician quoted) fail to tell you two very important facts: 1) This 40% “relative risk reduction” means that the absolute risk of this very rare cancer will fall from 1 case per 13,333 women to 0.6 cases per 13,333 women per year. In other words, it would take 22,222 women to use the IUD to result in 1 less case of this cancer per year. Whopee! 2) However, there would be many more unborn children lost (or killed) by the IUD. My bet is that…
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