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Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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There are 20 feet of blood vessels in each square inch of human skin.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.