New research suggests that the unique way human placentas produce sex hormones during pregnancy may have been a key driver ...

Parental egg-care in fish traps them in an evolutionary dead-end through the loss of the chorion-hardening system, according ...

The Trump administration is preparing to release an executive order aimed at expanding access to fertility treatments for ...

Narrow definitions of "male," "female," and "sex" restrict healthcare for trans people of all ages, while offering a ...

Proposed language would recognize two sexes in North Carolina’s rules and public policies, echoing President Donald Trump’s executive order.

Prostate cancer has a high rate of survival when detected in the early stages. If your family has a history of such cancers, ...

There are huge gaps in what we know about sperm, from how they navigate to why sperm counts are tumbling. The BBC unravels why we know so little about this perplexing cell.

University of Adelaide researchers discovered monotremes use a completely different sex determination system than other ...

Belinda Pletzer suggests that the menstrual cycle should not be seen as a complicating factor, but as one of many variables ...

THOMASVILLE — Archbold is now offering Aquablation therapy with the new HYDROS™ Robotic System, the next-generation platform ...

By now, surely there are few of us who don't know the meaning of the following three letters: UPF. They stand, of course, for ultra-­processed food.