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Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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Medication errors are three times higher among children and infants than with adults.
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The familiar sounds of your heart are made by the heart's valves as they open and close.