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

Supply chain issues are interrupting hormone replacement therapy for transgender men and women, both in the U.S. and abroad. Torrin Williams, a 26-year-old warehouse worker in Savannah, Georgia, was ...

Boosting testosterone in middle-aged and older men with low levels doesn't seem to increase heart attack risk, a new study shows. But researchers were quick to note their finding shouldn't be a ...