Tag: Blue blood

It is a common misconception that deoxygenated human blood is blue, a myth perpetuated by the appearance of veins through the skin. This belief has a surprising connection to aristocratic history and rare medical conditions. Understanding what 'having blue blood' truly means requires separating fiction from medical fact.

Despite the persistent misconception reinforced by diagrams and pop culture, human blood is never blue. The question, "What does blue blood mean in the body?", stems from a scientific misunderstanding, as all human blood is various shades of red due to the presence of the iron-rich protein hemoglobin.