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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.