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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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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Illicit drug use costs the United States approximately $181 billion every year.