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Vaccines prevent between 2.5 and 4 million deaths every year.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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The horizontal fraction bar was introduced by the Arabs.
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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.