The testicles and ovaries produce testosterone. Producing too little or too much testosterone can affect your physical and mental health. Testosterone is a hormone found in humans, as well as in other ...

Sheffield Hallam University provides funding as a member of The Conversation UK. Testosterone is the main sex hormone in men. It’s best known for its role in the development of male sexual ...

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 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 ...

Welcome to Testosterone HQ—Men's Health's guide to the exciting, complicated, and revolutionary world of testosterone. For everything you need to know about T, click here. Testosterone is a hormone ...

Clinicians should use a total testosterone level below 300ng/dL as a reasonable cut-off in support of the diagnosis of low testosterone. The American Urological Association (AUA) has issued new ...

Testosterone therapy can cause secondary erythrocytosis. Erythrocytosis can cause symptoms of hyperviscosity, such as headache, fatigue, blurred vision and paresthesias. A baseline value for ...

If you have low testosterone, it could affect your sex drive. But low testosterone might not be the only reason to blame if you have no libido. iStock/Getty Images You have low testosterone when your ...

Testosterone is the primary sex hormone in males but also has important functions in females. Natural testosterone supplements and boosters include vitamin D, fenugreek, or ashwagandha. A person with ...

Emily Laurence is a journalist, freelance writer and certified health coach living in Raleigh, North Carolina. She specializes in writing about mental health, healthy aging and overall wellness. For ...

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 ...