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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
Asthma cases in Americans are about 75% higher today than they were in 1980.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Excessive alcohol use costs the country approximately $235 billion every year.
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