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 ...

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 ...

A study published in the American Journal of Human Biology suggests that Western medical standards for male testosterone might not reflect the natural variation found in different environments.

As the national election draws near, observers have commented on every aspect of the candidates' appearance, including raising questions regarding their testosterone (T) levels. One of the more ...

This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...