Scientists have found that a special component in some people's blood provides them with natural protection against malaria.

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.

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 ...

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

High-altitude living may reduce diabetes risk as red blood cells act like glucose "sponges," absorbing sugar from bloodstream ...

What Is a RDW Blood Test? An RDW blood test – also known as a red blood cell distribution width blood test – is a measure of the difference in your red blood cells’ size and volume. RDW is one part of ...

Red blood cells may hold the secret to fighting diabetes—by soaking up sugar when oxygen runs low. People who live high in the mountains have long been observed to develop diabetes less often than ...

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