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In the last several weeks testosterone has come up on a pretty regular basis. I\\u2019ve written about it before, of course, but there\\u2019s something about the\\xa0novel elements\\xa0(e.g. solar irradiation for certain choice body parts) in recent conversations that\\u2019s kept the exchange going. \\xa0I thought I\\u2019d pull back from the peripheral findings a bit today and re-center the discussion.

As you know, testosterone plays a pivotal role not just for libido levels (although we won\\u2019t leave that out), but also for bone density, protein synthesis and muscle building, hair growth, estrogen production, red blood cell production, sperm production\\u2014amid other key functions in the body (for men\\xa0and women\\xa0by the way).

So, what are some factors that influence testosterone levels for the better and worse for both genders?\\xa0What are the mechanisms behind these associations? And how do they relate to a healthy Primal life?

Let\\u2019s dig in\\u2026

(This Mark\'s Daily Apple article was written by Mark Sisson, and is narrated by Tina Leaman)