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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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On average, the stomach produces 2 L of hydrochloric acid per day.