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Did you know?
There are more bacteria in your mouth than there are people in the world.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The familiar sounds of your heart are made by the heart's valves as they open and close.