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 ...

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 ...

In a T-rrible slump? As the primary male sex hormone, testosterone is essential for maintaining libido, erectile function, bone density and muscle mass. Men generally reach peak testosterone in their ...