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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Vaccines prevent between 2.5 and 4 million deaths every year.