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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The FDA recognizes 118 routes of administration.
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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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The average office desk has 400 times more bacteria on it than a toilet.