Testosterone levels peak during male puberty and decline with age in both males and females. With low testosterone in males, ...

A lagging libido in males is commonly attributed to a decline in testosterone, leading many men to hit the gym or supplement their diet in the hopes extra testosterone will give them a boost. Yet in ...

Medically reviewed by Danielle Weiss, MD PCOS is the most common cause of high testosterone in women, affecting about 10% ...

What used to be a niche treatment for men with legitimate medical conditions has morphed into "youth and vigor" as a ...

For many guys, having low energy isn’t simply a result of a rough night of sleep or a demanding workweek—it might be low testosterone levels at play. Testosterone is an androgen (or male hormone) that ...

As a man, maintaining normal levels of testosterone is critical not just for your health, but also for your quality of life and well-being. Testosterone is more than just the hormone that puts hair on ...

We also know that within normal ranges, testosterone levels are not strongly predictive of aggression. In the amygdala, a ...