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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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Cyanide works by making the human body unable to use oxygen.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.