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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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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Illicit drug use costs the United States approximately $181 billion every year.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.