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

Testosterone levels peak during male puberty and decline with age in both males and females. With low testosterone in males, you can have a decreased sex drive, trouble with erections, and low sperm ...

A recent episode of the hit Hulu comedy "Only Murders in the Building" highlights a hormone therapy that many men request as they get older. Steve Martin’s character, Charles-Haden Savage — a ...

We also know that within normal ranges, testosterone levels are not strongly predictive of aggression. In the amygdala, a ...

Please provide your email address to receive an email when new articles are posted on . Associations between sleep duration and serum testosterone vary by age and sex. Sleep quality was not associated ...

Sara Moniuszko is a health and lifestyle reporter at CBSNews.com. Previously, she wrote for USA Today, where she was selected to help launch the newspaper's wellness vertical. She now covers breaking ...

While the science isn’t yet clear, you could join the research that’s working to understand how nicotine affects testosterone levels. Nicotine is a highly habit-forming substance, one that can be in ...

Testosterone fuels male sex drive and erectile function and influences everything from bone density and muscle mass to fat distribution, red blood cell production, mood and energy levels.