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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.