This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...

The loss of testosterone can also have a significant impact on quality of life for middle-aged men. “Many men who are ...

WORKING OUT REGULARLY has a profound effect on all aspects of your health, including your heart and mental health. Exercise may also play a role in your testosterone levels—which effects muscle growth ...

Lacking a common protein may affect how muscles respond to testosterone, potentially affecting athletic performance and ...

There is no F.D.A.-approved testosterone product for women. Insurance won’t cover it. Many doctors won’t prescribe it. It’s become a cultural phenomenon. Credit... Supported by By Susan Dominus Spend ...