Who Came Up With Blood Types? What’s That All About?


Ya gotta wonder about blood types. When the conversation comes up, many people get a quizzed look on their face and say, “Gee, I don’t know my blood type.”

Does blood type matter? Yes it does, especially if you have RH-negative blood factor. Rh O- negative blood type is extremely rare in China and Japan. If that is your blood type, you may consider this before deciding to vacation there, as you would have a difficult time if you needed a transfusion. And then there’s the issue of women with O-negative blood having the Rh factor. After the birth of her first child, she must have a shot of rhogam. If the baby’s father and mother have “incompatible blood types,” this shot must be taken within so many hours after her first birth, otherwise, the mother’s second child would need a blood transfusion.

Who came up with these “blood types?” It was an Austrian pathologist named Karl Landsteiner. In 1900, he discovered that there were four types of human blood and he named them. Type A, type B, type AB and type O. Landsteiner discovered that if a patient receives a transfusion from a donor with the same blood type it is safer and will save many lives. Blood banks love donors with O negative blood because it is compatible with any blood type. It is sought after for babies needing exchange and for accident victims.

Suellen Ocean is the author of Secret GenealogyA How-to for Tracing Ancient Jewish Ancestry, Secret Genealogy IIUncovering the Jewish Roots of Our Christian Ancestors and Secret Genealogy III From Jewish Anglo-Saxon Tribes to New France Acadians. Available here:


Secret Genealogy:  https://www.createspace.com/4234160

Secret Genealogy II:  https://www.createspace.com/4235650

Secret Genealogy III:  https://www.createspace.com/4239009

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