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There are 20 feet of blood vessels in each square inch of human skin.
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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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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.