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There are more sensory neurons in the tongue than in any other part of the body.
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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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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Everyone has one nostril that is larger than the other.
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The average adult has about 21 square feet of skin.