People Really Thought Human Blood Was Blue: Here’s How That Myth Spread Around The World | Viral News
Last Updated:June 11, 2026, 19:25 IST For decades, millions of people believed blood inside the human body was blue until it touched oxygen. The truth is stranger, and far more interesting. News18 Almost everyone has heard some version of the claim at some point: Blood inside your veins is blue, and only turns red after…