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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The longest a person has survived after a heart transplant is 24 years.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.