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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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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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People about to have surgery must tell their health care providers about all supplements they take.