Common Myths That Have Been Debunked By Science

Blood Doesn't Turn Blue When You Run Out of Oxygen

Human blood can never be blue. When your body runs out of oxygen, it actually turns a much darker red because of the concentration of halted red blood cells. The reason you see blue in your veins is actually because of the many layers of pigment in your skin. 

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The More You Know

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Post originally appeared on Upbeat News.