Adam Katz always dreamed of being larger than life. “I knew I wanted to be bigger than what was naturally possible for most guys,” the Arizona-based online fitness coach, who began bodybuilding at 14, ...

Vial of Testosterone Cypionate in foreground with other vials visible in background. You’ve likely heard of stories about ‘roided up bodybuilders developing steroid-related health consequences like ...

Testosterone plays a vital role in various bodily functions, including muscle and bone health, cognition, red blood cell and sperm formation, and sexual and reproductive function in males. Share on ...

"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 ...