My grade school sex-ed was in the very early 80’s. When they covered the various prevention methods it really bugged me that for the IUD the description just said something like “Scientists still don’t know why IUDs work.”. I was like: how are they selling something like sticking copper in persons body without understanding it. Maybe it was understood then, but the curriculum writers decided to gloss over the details. I had a pretty good grasp of how science worked at the time, and this just set all my alarm bells off.
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