50 years ago, IUDs were deemed safe and effective
Excerpt from the February 3, 1968 issue of Science News
SHAPE SHIFTERS Current intrauterine devices, or IUDs, are T-shaped. But previous designs of the contraceptives included curlicues, s-shapes and an ill-fated spiked shield.
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IUDs: approval of a renaissance
In 1929, the German scientist Ernst Grafenberg inserted silver rings into the uteri of 2,000 women, and reported a pregnancy rate of only 1.6