Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

The Trump administration and Health and Human Services Secretary Robert F. Kennedy Jr. are flipping the pyramid upside down.

Young men increasingly feel the pressure to look jacked and they're going to extreme measures to achieve the aesthetic.

Q. You recently wrote that testosterone does not increase the risk for heart attacks. But you overlooked the real risk of ...

For those who need it—men who have low levels of testosterone with symptoms such as low energy, a low libido, and depression, ...

What used to be a niche treatment for men with legitimate medical conditions has morphed into "youth and vigor" as a ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For those who need it—men who have low levels of testosterone with symptoms such as low energy, a low ...

Individual sports rely on different physical and physiological attributes, and no two gender transitions are identical.

From my late teens into my mid-20s I almost exclusively dated men who were touching 40. There was a sculptor, a Hungarian ...

The repeat problems at Houston-based Empower Pharmacy include inadequate quality testing and a failure to clean equipment.

At last year’s CES, Eli Health announced the Hormometer — an at-home hormone test for cortisol that utilized saliva and a ...