Caption In male mice, testosterone is converted to estrogen by the action of the enzyme aromatase. The testosterone surge at the dawn of male life in the mouse becomes the basis for activation of ...

“Women have three to four times the amount of testosterone in their body than estrogen before menopause.” Research on women and testosterone has been limited, but as more is done, experts are ...

The current flurry of interest in testosterone replacement therapy reminds us of the estrogen/progestin story before the Women's Health Initiative lots of hype and intriguing observational ...