Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

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There are 60,000 miles of blood vessels in every adult human.

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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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