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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

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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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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

The elephant raises its trunk as a sign of warning or to smell enemies or friends The elephant raises its trunk as a sign of warning or to smell enemies or friends
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Matthew Ritchie, No Sign of the World. Matthew Ritchie, No Sign of the World.
Video: ATPase function - membrane transport, contractile proteins and synthesis

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