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, ...

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

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 than people living closer to sea level. But the mechanism of this protection ...

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

Pushing the body towards ultra-marathon distances can cause red blood cells to be less flexible, potentially impacting their ability to deliver oxygen and remove waste throughout the body, a new study ...

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

A study shows ultramarathon running induces oxidative stress and structural damage in red blood cells. Multiomics analyses revealed protein oxidation, copper accumulation, and reduced cell flexibility ...

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