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There are 20 feet of blood vessels in each square inch of human skin.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Illicit drug use costs the United States approximately $181 billion every year.