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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

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To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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