Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red blood cells in ways that make them less flexible and more prone to breakdown, ...

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 ...

A study shows ultramarathon running induces oxidative stress and structural damage in red blood cells. Multiomics analyses ...

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

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

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