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DegenRolf's profile
Rolf Degen
Rolf Degen
Rolf Degen
@DegenRolf

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Rolf Degen

@DegenRolf

Science writer and book author in psychology, neuroscience and evolution

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amazon.com/Rolf-Degen/e/B…
Joined July 2013

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    1. Rolf Degen‏ @DegenRolf Dec 31
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      Testosterone levels have declined in adolescent and young adult males over the last two decades. https://www.sciencedirect.com/science/article/pii/S1743609519315292 …pic.twitter.com/9AFyMaQlpq

      44 replies 265 retweets 638 likes
    2. Man of Constant Sorrow‏ @ManOfConstantS3 Dec 31
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      Replying to @DegenRolf

      Thats interesting. Why is that?

      1 reply 0 retweets 3 likes
      Rolf Degen‏ @DegenRolf Dec 31
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      Replying to @ManOfConstantS3

      No causal theory has yet been tested, could be everything from chemicals to changes in men's roles to digital media.

      11:53 PM - 31 Dec 2019
      • 6 Retweets
      • 41 Likes
      • Jason Christ Húrin Thalion carlos sanchez William Wayland Melih Paksoy Nicola B. Sorin Brendan Man of Constant Sorrow
      7 replies 6 retweets 41 likes
        1. New conversation
        2. Felipe Contreras‏ @_felipe_c_ Jan 1
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          Replying to @DegenRolf

          For changes this large, it is unlikely to be any of those. It is probably increased obesity: "Obesity lowers testosterone levels.... a 2007 study of 1,667 men found that each one-point increase in BMI was associated with a 2% decrease in testosterone."https://www.health.harvard.edu/mens-health/obesity-unhealthy-and-unmanly …

          1 reply 0 retweets 2 likes
        3. Rolf Degen‏ @DegenRolf Jan 1
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          Replying to @_felipe_c_

          The study found BMI to be unrelated to the decline in T. Also social context often has large effects on testosterone.

          0 replies 0 retweets 2 likes
        4. End of conversation
        1. Julián 👑 🇦🇷‏ @JuLiAn242z Jan 1
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          Replying to @DegenRolf

          Modified feed probably.

          0 replies 0 retweets 2 likes
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        1. Man of Constant Sorrow‏ @ManOfConstantS3 Dec 31
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          Replying to @DegenRolf

          Ok, thanks for responding, thats very interesting

          0 replies 0 retweets 1 like
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        1. RaceRealist‏ @Race__Realist Jan 1
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          Replying to @DegenRolf

          The first is debated in the anatomy and physiology texts. We need more information.

          0 replies 0 retweets 0 likes
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        1. Truth Seeker‏ @TruthSeekerKai Jan 1
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          Replying to @DegenRolf

          Or it could be all of those factors men's lifestyle has changed dramatically in the past few decades.

          0 replies 0 retweets 0 likes
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        1. Edwin Morillo‏ @demonwillori Jan 1
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          Replying to @DegenRolf

          Nutricional changes I guess.

          0 replies 0 retweets 1 like
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