Doctors and scientists agree that testosterone, the male sex hormone, is responsible for female sexual arousal. But most of the studies done so far have been on women with naturally low testosterone levels.
So researchers at Utrecht University in the Netherlands decided to study the effect of testosterone on women with normal endocrine function. As reported in the Archives of General Psychiatry, they gave testosterone tablets to eight women, then measured both their blood levels of testosterone and their sexual arousal.
The testosterone levels in the blood peaked after just 15 minutes, and dropped back to the prior levels after 90 minutes.
But there was an increase in sexual arousal too. It came about four hours after the peak testosterone level