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Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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 60,000 miles of blood vessels in every adult human.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The average adult has about 21 square feet of skin.