Young men without diagnosed testosterone deficiencies are increasingly taking testosterone to accelerate their gains, a trend ...

Romantic partners who spend a weekend practicing childcare with a lifelike baby doll tend to experience a drop in ...

“With significant concussion, you see dramatic falls in testosterone levels and what has gone unrecognized for so long is ...

A new JAMA study found a single low morning reading in 25.7 percent of participants—but that is not the same as a low-T ...

Washington voters will decide this fall whether transgender athletes can continue to compete in girls’ sports in K-12 schools.

Defense Secretary Pete Hegseth announced a few months ago that male U.S. military service personnel who have hit their 30s will now be tested annually for testosterone deficiency.

A new iScience study of 528 participants reveals that offensive success in human conflict depends on strategic ...

Former military doctors say the new policy won’t do what the Pentagon wants. Troops worry it will affect their careers.

Young men with lower total testosterone and sex hormone-binding globulin levels show unfavorable metabolic cardiovascular ...

RJK Jr. has explored a few controversial ideas, particularly in the health and wellness sector — but regardless of where you ...

For dads juggling broken nights and early workouts, protecting sleep can mean changing when and how long you train. Here’s ...

Can more testosterone help people who do not have low levels? Some patients want it, physicians say it sometimes works, and ...