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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Everyone has one nostril that is larger than the other.