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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.