The defense secretary said the Pentagon will test the testosterone levels of troops 30 and over. It was unclear if the plan would affect women or military fitness rules.

Low testosterone isn't always just a normal part of aging. Learn the signs of hypogonadism and the treatment options that can help you feel your best.

Historically, testosterone has been associated with masculinity. Someone having high levels of testosterone was shorthand for perceived higher levels of aggression, strength, and libido. However, testosterone plays a significant role in the health and ...

Higher testosterone levels during adolescence are associated with increased involvement of the brain's anterior prefrontal cortex (aPFC) in emotion control, but the opposite effect occurs during adulthood. In a study published in Developmental Science ...

After years of research, we finally understand how GLP-1s impact T on day 1 versus years later.

Drs Chris and Xand ask - what are the pros and cons of testosterone replacement therapy?

The COVID-19 pandemic has had a bigger toll on men than it has on women. There has been a lot of conjecture about why this might be. One theory is that the male sex hormone, testosterone, has a dampening effect on the immune system, making men more ...

Defense Secretary Pete Hegseth announced new testosterone screenings for troops 30 and older. Screening is automatic, but treatment is voluntary.

This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Ryan Knutson: Like a lot of men, my colleague Rolfe Winkler and I get bombarded online with content about testosterone therapy.