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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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Excessive alcohol use costs the country approximately $235 billion every year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.
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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.