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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The other thing I don't understand is how much psychology affects testosterone. Can stress, social phenomena, or other life events affect testosterone levels? I see occasional REALLY big correlational effect sizes for e.g. widowers having lower T.
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It's a practical concern for me because I have a son. What, if anything, can individuals do to avoid endocrine disruption? (Seriously seeking ideas; evidence-supported only please.)
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Replying to @weissjeffm
Low testosterone is a (weak) predictor of all-cause mortality in aging men. Also, subfertility/infertility.
12:12 PM - 21 Mar 2019
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