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The horizontal fraction bar was introduced by the Arabs.
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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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The longest a person has survived after a heart transplant is 24 years.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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There are more nerve cells in one human brain than there are stars in the Milky Way.