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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 familiar sounds of your heart are made by the heart's valves as they open and close.
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Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Blood is approximately twice as thick as water because of the cells and other components found in it.