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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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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.