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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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There are 20 feet of blood vessels in each square inch of human skin.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.