A new study shows that ultramarathons damage and replenish red blood cells in ways that could help treat cancer patients.

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 ...

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, ...

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.

Extreme endurance training is often seen as a sign of strong physical fitness. However, new research indicates that very long-distance runs may have negative effects on the body.

"It feels like glass running through your veins." Faith Adjei-Sarpong lives with sickle cell disease and, like many others ...

A groundbreaking new study reports important differences in oxygen physiology and red blood cell function in individuals with Down syndrome. A groundbreaking new study published in Cell Reports by ...

Sickle cell disease is often thought of solely as a blood disorder, but new research from the Wood Neuro Research Group ...