Testosterone is the main sex hormone in men. It’s best known for its role in the development of male sexual characteristics and physical features, but there are also many surprising and lesser known ...

Testosterone is an important hormone. It helps men develop during puberty, and as they age, it plays a critical role in helping control fat levels, cholesterol, and glucose levels. Testosterone ...

Urologist Dr. Soroush Ramin says low testosterone is one of the most common complaints in his practice. A "normal" testosterone range in a healthy male is 300 to 1,200 nanograms per deciliter. A man ...

Getting a high testosterone reading offers bragging rights for some men of a certain age, and may explain in part the appeal of testosterone supplements. But once you are within a normal range, does ...

If you’re an older man thinking about testosterone therapy to improve your mood, energy and sex drive, there’s an important distinction to be made: Do you actually have low testosterone levels, ...

What are normal testosterone levels by age? An older photographer mentors a younger one. Testosterone is an important hormone. It helps men develop during puberty, and as they age, it plays a critical ...