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.
Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red ...
RED blood cells (RBC) serve as a primary glucose sink during hypoxia, a 2026 study has found. RBCs were found to act as ...
Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a ...
Researchers collected blood from 23 runners right before and right after two endurance races: a 40-kilometre mountain race and the 171-kilometre Ultra Trail du Mont Blanc. They then analyzed thousands ...
Running is good for your health, but pushing it too far can take a hidden toll. New research shows that ultramarathons may ...
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 ...
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 ...
A study shows ultramarathon running induces oxidative stress and structural damage in red blood cells. Multiomics analyses ...
A biomarker in red blood cells could alert patients with diabetes to heart damage before clear early symptoms appear.
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 ...