testosterone, n.All

Men may feel the symptoms of a virus more than women because high levels of testosterone can suppress the immune system.

Testosterone evolved from estrogen 500 million years ago.

Testosterone is a hormone which causes facial hair, muscularity, a deep voice, speeding tickets, the desire to watch professional wrestling and Arnold Schwarzenegger movies, war, fist fights, and the need to purchase cocktails for women with names like Boom Boom.

Testosterone is able to make a competition out of anything. Somewhere, probably, there’s a birdwatching club whose first rule is that it mustn’t be spoken of.

Testosterone is the number one killer of brain cells in teenage boys.

Not masturbating for one week leads to a 45% increase in testosterone for men.

Testosterone is a word that has a lot of "T" in it.

Beard growth depends on both genetics and testosterone.