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, ...

A recent study delves into the science, but doctors say there’s more to it.

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 ...

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.

HealthDay News — Ultra-endurance running accelerates red blood cell (RBC) aging through inflammatory and oxidative pathways, according to a study published online Feb. 18 in Blood Red Cells & Iron.

Scientists have found that a special component in some people's blood provides them with natural protection against malaria. A recent study has demonstrated that a genetic variant named rs112233623-T ...

A study published in the journal Scientific Reports finds that cigarette smoking can trigger suicidal erythrocyte death, a condition that may increase the risk of anemia and microcirculation ...

What Is an MCHC Blood Test? A mean corpuscular hemoglobin concentration (MCHC) blood test measures the amount of a protein called hemoglobin in your red blood cells. It’s one of many measurements ...