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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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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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Medication errors are three times higher among children and infants than with adults.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.