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Why do blood types matter? - Natalie S. Hodge

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TEDEd Animation

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It’s often said that despite humanity’s many conflicts, we all bleed the same blood. It’s a nice thought, but not quite accurate. In fact, our blood comes in a few different varieties. Natalie S. Hodge defines the four major blood types and sheds light on why some bloods can mix while others cannot.

Why are people with Type O blood considered universal donors?

About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

  • Educator Natalie S. Hodge
  • Script Editor Alex Gendler
  • Director Brad Purnell
  • Narrator Addison Anderson

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