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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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Cyanide works by making the human body unable to use oxygen.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.