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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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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.