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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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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.