In part one of a miniseries exploring the popularity of testosterone, Madeleine Finlay hears from Professor Channa Jayasena of Imperial College London, who is chair of the Society for Endocrinology, ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." WORKING OUT REGULARLY has a profound effect on all aspects of your health, including your heart and ...

Learn how testosterone therapy works step by step, including diagnosis, treatment options, monitoring, and potential risks for men.

Everyone's talking about testosterone lately, but do we really know what it is? It's a hormone produced primarily in the testicles that plays a key role in muscle growth and athletic performance. In ...

This article was reviewed by Felix Gussone, MD. Key Takeaways: Testosterone does more than drive puberty. It influences drive ...