jueves, agosto 24, 2006

¿Testosterona = Mejores deportistas?

Natasha Singer | The New York Times - El País

:: Testosterone injections can make male rats more aggressive in marking their territories, cause castrated red deer to grow antlers, and induce female rhesus monkeys to screech like males. In studies on humans, testosterone injections have increased and strengthened muscles.

But does taking testosterone — a controlled substance whose possession is illegal unless prescribed for medical reasons — automatically improve athletic performance?

[Versión en español]