The researchers stumbled across a hidden organ entirely by mistake which could make a positive change to cancer treatment.

Some human organs, such as kidneys and lungs, have back-ups. Some can be lost with little consequence—the spleen, for example ...

Biological sex is usually described in simple binary terms: male or female. This works well for germ cells (sperm versus eggs ...

Now researchers have created a new approach: a blood test that can measure the biological ages of eleven organs and systems ...

Immortality through transplants is unlikely, but slowing aging could improve health. The bigger issue is whether longer lives ...

Forget emotional baggage — you’re hauling around spare parts. Turns out, you don’t need all 78 of your organs to get through life, which comes in handy when surgeons have to start making cuts.