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On average, the stomach produces 2 L of hydrochloric acid per day.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.