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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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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Aspirin may benefit 11 different cancers, including those of the colon, pancreas, lungs, prostate, breasts, and leukemia.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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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.