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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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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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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.