Modern genetics reveals that over 50 genes across many chromosomes—not just X and Y—govern sex development. The term “sex ...

New data reveals differences in gene activity in the brains of men and women. They start in the womb and evolved millions of ...

New study explains the gender gap in Alzheimer's rates, with scientists identifying chromosomal differences and hormonal ...

A new scientific study has revealed that hundreds of genes in the human brain operate differently between males and females, ...

From eating certain foods to timing intimacy perfectly, you might have heard countless "old wives' tales" about conception. While these stories are often shared with a positive intention, most of them ...

It's supposed to fight off invaders to keep us healthy. But sometimes it turns traitor and attacks our own cells and tissues.

In many bird species, it’s the males who live longer. The researchers found support for this idea: in 72% of mammal species, females outlived males by about 12%. Meanwhile, in 68% of bird species, ...

Caster Semenya, the South African double Olympic 800 metres champion, lost her appeal against World Athletics rules that women with high natural testosterone levels must take drugs to reduce them to ...

They found that one assumption to explain this phenomenon from a genetic standpoint is the "Heterogametic Sex Hypothesis," ...

The Supreme Court agreed to freeze a lower court order that stopped the State Department from enforcing a new passport policy ...