Add Yahoo as a preferred source to see more of our stories on Google. Reeder explains that testosterone is far more involved than you would first think -- it plays are part in everything from muscle ...

For men, the key hormone testosterone triggers the development of the male reproductive organs during fetal development, drives puberty during adolescence, and helps maintain intimacy drive, bone ...

Testosterone is one of the few hormones that’s broken out of biology textbooks and into the popular consciousness. For years it has been a shorthand for all things stereotypically male—ever notice how ...

Testosterone is a pivotal hormone in male development and for masculine characteristics. It's essential for sex drive, muscle growth and strength, and bone density. According to Madison Reeder, ...

For many guys, having low energy isn’t simply a result of a rough night of sleep or a demanding workweek—it might be low testosterone levels at play. Testosterone is an androgen (or male hormone) that ...