Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes than people living closer to sea level. But the mechanism of this protection ...

Red blood cells, long thought to be passive bystanders in the formation of blood clots, actually play an active role in helping clots contract, according to a new study by researchers at the ...

See how red blood cells react when exposed to hand sanitizer. A surprising microscopic experiment that’s both educational and ...

The immune system consists of inflammatory and regulatory T cells (Tregs) that promote or dampen immune activity, respectively. These cells react to specific antigens that specialized cells like ...

Anemia may develop from having too few red blood cells or too little hemoglobin, the iron-rich protein that carries oxygen to all of your organs. Anemia is a signal that your body’s capacity to ...

Medically reviewed by Michael Menna, DO Key Takeaways A low red blood cell count can be the result of lifestyle factors or signal a health condition requiring treatment. In the absence of an ...

Expecting mothers with Sickle Cell Disease can have healthy pregnancies. Learn about managing risks, specialist care, and ...

Learn how to treat a sickle cell disease crisis at home and when you should go to a medical center for more care.

Almost all animal species—including humans—have blood cells, but between different species our blood tells different stories. The lineage and components of blood cells vary widely, and this variety is ...