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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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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Illicit drug use costs the United States approximately $181 billion every year.
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There are more bacteria in your mouth than there are people in the world.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.