Red blood cells transport oxygen throughout your body, including to vital organs and tissues. They also help your body get rid of carbon dioxide. Too little or too many red blood cells may be ...

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a ...

Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red ...

What Is a RDW Blood Test? An RDW blood test – also known as a red blood cell distribution width blood test – is a measure of the difference in your red blood cells’ size and volume. RDW is one part of ...