Testosterone declines gradually, and the signs are easy to overlook or misinterpret. Here’s how doctors evaluate hormone ...

"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 ...

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 ...

A novel substance called shilajit is seeping into the biohacking and longevity market—and longevity bros can’t get enough of ...

The personal trainer and content creator, who shares his fitness progress online, started the therapy when he was only 18 out of “insecurity.” “I was really lanky — I’m six foot three — and very ...

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, ...

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

Add Yahoo as a preferred source to see more of our stories on Google. Rob, 42, is a fitness guy. He loves working out, spends his spare time in the jujitsu gym and eats a high-protein diet heavy on ...