New U.S. dietary guidelines for the first time include advice for men on maintaining healthy testosterone levels.

YORK (Reuters) - Children exposed to high levels of testosterone in the womb showed more autism-related traits later in life, according to findings that suggest the male hormone may play a key role in ...

LONDON (Reuters Life!) - Testosterone makes people behave badly, but only because of our own prejudices about its effect, not its true biological action, scientists said on Tuesday. A Swiss and ...

We also know that within normal ranges, testosterone levels are not strongly predictive of aggression. In the amygdala, a ...

Everyone's talking about testosterone lately, but do we really know what it is? It's a hormone produced primarily in the ...

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...