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 ...

Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

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 levels peak during male puberty and decline with age in both males and females. With low testosterone in males, you can have a decreased sex drive, trouble with erections, and low sperm ...

WHAT’S CONSIDERED NORMAL when it comes to testosterone levels is relative. Normal varies from person to person, and doctors say your actual number may not be as important as you might think. How you ...

Harmonized reference normal ranges for testosterone levels in healthy, nonobese men have been generated in a landmark study that should aid in accurately diagnosing hypogonadism, say US investigators.

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 ...