Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a recent study. Although the duration and long-term implications of the ...

Learn more about the impact ultramarathon running has on red blood cells and how it may do more harm than good for the body. Running can be a great way to keep the body moving and to stay in shape.

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 study published in the American Society of Hematology's journal Blood Red ...

Ultra-Marathon Running Depletes Athletes' Red Blood Cells, Study Finds By Dennis Thompson HealthDay ReporterTHURSDAY, Feb. 19, 2026 (HealthDay News) — Ultra-marathon runners must be incredibly fit to ...

(WASHINGTON – Feb. 18, 2026) – 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 ...