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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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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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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.