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Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.