From radical experiment to a 15 million pint annual lifeline

Big Idea: Blood Transfusions · 4:37 · Video: SciShow · Watch at the source

In short: The practice of transferring blood between humans was once considered a radical medical gamble. This video explores the surprising history of how blood transfusions evolved from a daring first attempt into a cornerstone of modern medicine.

The practice of blood transfusion began roughly 350 years ago. While it was once a revolutionary and risky concept, it has become a massive public health infrastructure in the United States, where over 15 million pints are donated annually to treat more than 5 million patients.

The video provides a historical narrative of these early medical milestones, tracing the transition from experimental procedures to the standardized life-saving treatments used today.

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