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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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The average office desk has 400 times more bacteria on it than a toilet.
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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.