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

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 ...

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a study published in the American Society of Hematology's journal Blood Red ...

Your blood cells work tirelessly to keep you alive, carrying oxygen throughout your body and fighting off infections. But hidden in your daily meals are foods that can silently compromise these vital ...

A new study describes a technique that rejuvenates aging blood-forming stem cells and could help reduce the risk of age-related blood disorders.

Extreme endurance training is often seen as a sign of strong physical fitness. However, new research indicates that very long ...

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

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