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

After a long trail race, some of your red blood cells may not bend the way they should. That matters because red blood cells have a tight job description.

On the average, humans – and pigs, and deer, and birds – who live at high altitudes have better blood glucose control than ...

Learn more about the impact ultramarathon running has on red blood cells and how it may do more harm than good for the body.

Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes ...

Human bodies make 2 million red blood cells per second. They each live for 120 days and spend that time zooming completely around the body every 20 seconds, carrying oxygen from the lungs to other ...

Red blood cells (RBCs), traditionally regarded as passive oxygen carriers, are now recognized as highly dynamic regulators of immune and vascular ...

Ultramarathons might push red blood cells past their limits—accelerating their aging in the process.