Add Yahoo as a preferred source to see more of our stories on Google. Before-and-after photo shows what happened when a 42-year-old male model went on testosterone therapy to gain muscle and energy A ...

Testosterone. Even the word alone sounds manly. For men, testosterone is important for drive, fertility, heart health, bone health, energy and mood — to name just a few benefits. When you have low ...

Add Yahoo as a preferred source to see more of our stories on Google. Prescriptions for testosterone therapy have doubled in the past two decades - Alamy The guys in your local gym have been peddling ...

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 ...