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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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There are more sensory neurons in the tongue than in any other part of the body.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Illicit drug use costs the United States approximately $181 billion every year.
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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.