American men are loading up on testosterone—whether they need it or not.

This article was reviewed by Felix Gussone, MD. Key Takeaways: Testosterone does more than drive puberty. It influences drive ...

This article was reviewed by Felix Gussone, MD. Key Takeaways: Hormones play a major role in regulating metabolism, mood, ...

In part one of a miniseries exploring the popularity of testosterone, Madeleine Finlay hears from Professor Channa Jayasena of Imperial College London, who is chair of the Society for Endocrinology, ...

Learn how testosterone therapy works step by step, including diagnosis, treatment options, monitoring, and potential risks for men.

Social media claims by clinics promoting testosterone treatment for men to improve their physique and mood are driving large ...

Add Yahoo as a preferred source to see more of our stories on Google. Rob, 42, is a fitness guy. He loves working out, spends his spare time in the jujitsu gym and eats a high-protein diet heavy on ...

New NHANES data link increased time outdoors with higher testosterone and reduced risk of low testosterone in men. Find out ...

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Testosterone is plummeting among young men — and their X-rated digital sexcapades could be the kinky culprit. The hormone helps maintain and develop sex organs, muscle mass, red blood cells, bone ...

Some link the craze to the “manosphere” culture, with its fixation on bulging muscles and longevity. Read more at ...