Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.

A Brazilian woman’s routine post-miscarriage tests led to a rare genetic revelation that surprised doctors and adds to our ...

Harvard researchers reveal why women are twice as likely to develop Alzheimer's disease, pointing to X chromosome genes and ...

The symptoms: The woman was referred to a hospital following a miscarriage at seven weeks of pregnancy. Leading up to the hospital visit, the woman's gynecologist had decided to check the patient's ...

Shaped by thousands of years of evolution, the body’s immune system is a vigilant guardian primed against external infectious threats. Too much vigilance, however, and this guardian of potent cells ...

Women generally consider themselves to be the more robust side of the species when it comes to health and illness. Now new research, published in BioEssays, seems to support the idea. The research ...

The story of a rare Calico Cat, Josie, has gone viral on TikTok after user @xxycalico shared it on the platform with a video montage of the feline. While the adoption story of Josie is heart-warming, ...

World Athletics president Sebastian Coe said Tuesday that the track and field’s governing body has approved the introduction of cheek swabs and dry blood-spot tests for female athletes in order to ...

Sex chromosomes are chromosomes, or packages of DNA, that are found inside the nucleus of all of your cells. There are two different kinds: X and Y, which determine whether you’re biologically male ...