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@roanwar @FitFounder 60% of the variance in testosterone levels in adolescent males is explained by genetics https://t.co/XtHF0lXSoG
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1,532 followers
From 1998: #testosterone levels are 60% heritable in men, 40% in women: https://t.co/TJqjN48QSU #throwbackthursday https://t.co/KDhwbG93PY