Book Launch for Testosterone: An Unauthorized Biography, by Rebecca M. Jordan-Young and Katrina Karkazis. Testosterone is not what you think it is, and it is decidedly not a “male sex hormone.” Here is the debunking life story of a molecule we thought we all knew. Testosterone is a familiar villain, a ready explanation for innumerable social phenomena, from the stock market crash and the overrepresentation of men in prisons to male dominance in business and politics. It’s a lot to pin on a simple molecule.