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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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The average adult has about 21 square feet of skin.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.