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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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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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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.