WebMD

RDW Blood Test

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 ...

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 endure races that can extend more than 100 miles, but their bodies pay ...

Being at high altitudes could help blood sugar control: Here's why

A recent mouse study suggests that low-oxygen conditions, such as being at high altitudes, could cause red blood cells to ...
Oregonian

Dear Doctor: Can living at a high altitude cause red blood cells to grow larger?

DEAR DR. ROACH: We’ve lived at 6,000 feet for about 30 years. Over the years, our mean corpuscular volume (MCV) levels have slowly increased to 100 fl (the normal range being 79-97 fl). Our primary ...