Medical treatment using blood or blood products, such as transfusions, to heal or improve a patient's condition.
From Greek haima (blood) + therapeia (healing/treatment). This term emerged in the early 20th century as doctors developed safer methods of blood transfusion and understood blood's healing properties.
Blood transfusions are one of modern medicine's greatest discoveries—they've saved countless lives during surgery and accidents. What's wild is that doctors had to figure out blood types before transfusions would work, because mixing incompatible blood types was actually dangerous!
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