As winter sets in, many people start believing that colder weather naturally boosts testosterone levels. You might hear claims that the body performs better hormonally in the cold, or that winter ...

Testosterone, the primary sex hormone in men, plays a vital role in male reproductive development and function, as well as other functions like bone density and muscle mass. Testosterone levels ...

What used to be a niche treatment for men with legitimate medical conditions has morphed into "youth and vigor" as a subscription. But there's a dark side.