Tag: Aristocracy

Did you know the term "blue blood" dates back to medieval Spain? It is a fascinating phrase that has evolved from a social marker of nobility to encompassing modern medical and scientific meanings. Understanding what is considered blue blood requires looking at different fields, from historical etymology to rare health conditions.

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.