Leeches Were Used to Treat Most Diseases
For centuries, leeches were the go-to solution for just about any illness. Doctors believed removing blood would balance the body’s humors, so leeches were applied in large numbers and left to suck for hours.
Though it sounds medieval, this was a serious medical treatment. Ironically, it often weakened patients further or caused infections. Yet for a long time, leeches were considered the pinnacle of medical science.
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