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There are 20 feet of blood vessels in each square inch of human 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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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.