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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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The average office desk has 400 times more bacteria on it than a toilet.
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Your heart beats over 36 million times a year.