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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.