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The human body produces and destroys 15 million blood cells every second.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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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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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.