Do you know what your hormone levels are? Should you? Your body is home to more than 50 hormones — chemical messengers that compose the endocrine system — and hormonal changes may reflect any number ...

UCSF researchers showed that estrogen can turn on pain signals in the gut, offering new insights into conditions like ...

In a first-of-its-kind study comparing younger and older biological females, researchers at the University of Arizona examine how shifts in estrogen levels can alter the brain’s fear-circuitry — ...

This might help explain why teen-agers act like, well, teen-agers. Researchers reported that a hormone produced by the body in response to stress that normally serves to calm adults and younger ...