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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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Cyanide works by making the human body unable to use oxygen.

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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

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There are more bacteria in your mouth than there are people in the world.

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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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