I'm deeply confused by the worldwide drop in testosterone levels & sperm counts. It's a *huge* effect, too big to be explained by obesity. The most common explanation I see proposed is environmental contaminants. But I don't know if that's true, or which contaminants matter most.
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Replying to @panopticooked
there were no pocket phones in 1970-2000...
11:54 AM - 21 Mar 2019
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