this is funny...thinking of the old adage regarding the licking of one's own wounds.
Powerful Painkiller Detected in Human Saliva
According to new research, the human body produces a painkiller that could be several times more powerful than morphine. Researchers injected rats with opiorphin, a natural painkiller extracted from human saliva, to suppress pain for chemically-induced inflammation and acute physical pain. The results showed that the administered dose of 1 milligram of opiorphin provided the same painkilling power as 3 to 6 mg of morphine.More on the subject...
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