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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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There are approximately 3 million unintended pregnancies in the United States each year.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.