Testosterone is a hormone that supports muscle mass, bone strength, mood, cardiovascular health, and intimate health. Low testosterone can contribute to symptoms like fatigue, … ...

Testosterone tests measure levels of testosterone in the blood. At-home test kits can be convenient, but they cannot diagnose underlying health conditions that cause high or low testosterone. Share on ...

Testosterone levels are at their highest during adolescence and early adulthood. Testosterone levels may start to decline after age 30 years in males and between ages 45 and 55 years in females.

Testosterone is the main sex hormone in men. It’s best known for its role in the development of male sexual characteristics and physical features, but there are also many surprising and lesser known ...

Testosterone is a male sex hormone that is important for sexual and reproductive development. The National Institutes of Health regards testosterone as the most important male hormone. Women also ...

Testosterone is being hailed as the secret to better energy, mood, and sex drive. Here’s what experts say about when it actually does help—and when it doesn’t. Women naturally produce testosterone, a ...