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There are 60,000 miles of blood vessels in every adult human.
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The average adult has about 21 square feet of skin.
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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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Cyanide works by making the human body unable to use oxygen.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.