How can low testosterone levels affect a man's livelihood?

Another tricky Q: By livelihood i assume you mean salary or some productivity measure at work. Earlier this year, my cousin pointed out that wall street traders were looking for t supplementation to boost their performance (http://bit.Ly/xqjexf). A few years ago, a study purportedly demonstrated that t affects risk taking behavior in wall street traders. In sum, low t might decrease (work) performance.