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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).