Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...

Testosterone fuels male sex drive and erectile function and influences everything from bone density and muscle mass to fat distribution, red blood cell production, mood and energy levels.

In 2014 Time magazine ran a cover story titled Manopause?!, documenting the rise of the $2 billion testosterone industry, which marketed the hormone as a way to fend off age-related declines in sexual ...

Testosterone replacement therapy, most commonly available as a transdermal gel, is increasingly used to treat men with testosterone deficiency. Although gels provide a convenient, noninvasive ...