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The average office desk has 400 times more bacteria on it than a toilet.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.