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The average office desk has 400 times more bacteria on it than a toilet.
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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.
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There are 20 feet of blood vessels in each square inch of human skin.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.