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 ...

This article was reviewed by Felix Gussone, MD. As the primary male hormone, or androgen, testosterone regulates various aspects of your growth and development as a man. Testosterone plays a central ...

Testosterone plays a crucial role in men’s health, influencing everything from energy levels and mood to muscle mass, bone density, and sexual function. Understanding the causes, symptoms, and ...

Dr. Jamin Brahmbhatt is a urologist and robotic surgeon with Orlando Health and an assistant professor at the University of Central Florida’s College of Medicine. You’re feeling unusually tired and ...

For those who need it—men who have low levels of testosterone with symptoms such as low energy, a low libido, and depression, ...

Understanding Testosterone Replacement Therapy and Its Alternatives Clearwater, United States – January 5, 2026 / The ...

Genetics play a role in low testosterone for some men, but underlying causes vary widely. Many genes influence testosterone ...

Know how zinc can boost testosterone levels and increase men's energy through natural food sources and supplements.

(CNN) — You’re feeling unusually tired and sad, and your interest in sex has dropped off. That’s no fun. If you’re a guy, you may be thinking you have low testosterone. Wait a minute. Don’t we all ...