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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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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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People about to have surgery must tell their health care providers about all supplements they take.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.