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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got a rural-urban testosterone or sperm count correlation to link there?
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Low testosterone is a (weak) predictor of all-cause mortality in aging men. Also, subfertility/infertility.
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I have wondered about this also. I don't have answers, but I wonder if this is a human only phenomenon or if it happens to other animals. That could help parse between environmental contaminants and psychological/societal factors. I'll be following this thread.
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it appears to be *not* happening in farm animals: MULTIGNER, LUC, et al. "Secular sperm trends in stallions between 1981 and 1996." Journal of andrology 20.6 (1999): 763-768., VAN OS, JAN L., et al. "Long‐Term Trends in Sperm Counts of Dairy Bulls." Journal of andrology 18.6
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It's a death by 10.000 stings, you can't really reasonably fight it on all fronts. Stay away from plastic containers but that's common knowledge Probably a lot of T-production is feedback loops, so lifting / fighting / good sleep Smoking also helps but that's horrible advice
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I don't know, but I can tell you I don't feel particularly masculine spending eight hours a day in a chair in an office doing stuff I dislike.
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Sperm counts also down 35% in dogs since 1988.
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That’s not a good sign - any data about wild animals?
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