Contrary to popular belief, having higher levels of testosterone doesn't necessarily make men have a higher libido. Day-to-day changes in testosterone levels were discovered to have no real link to ...

WASHINGTON — Too much testosterone can kill brain cells, researchers said Tuesday in a finding that may help explain why steroid abuse can cause behavior changes like aggressiveness and suicidal ...

Daniel Kelly does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

One problem with theories which start with genes and then go on to try to explain complex mental outcomes such as psychosis or autism in the way in which the imprinted brain theory does is that they ...