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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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There are more bacteria in your mouth than there are people in the world.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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In 1864, the first barbiturate (barbituric acid) was synthesized.