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 ...

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.

By Dennis Thompson HealthDay ReporterTHURSDAY, Feb. 19, 2026 (HealthDay News) — Ultra-marathon runners must be incredibly fit to endure races that can extend more than 100 miles, but their bodies pay ...

Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red ...

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 ...

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

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

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 ...

Blood tests are helpful for monitoring your overall health. But research suggests they can also give us clues about the ...