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The average office desk has 400 times more bacteria on it than a toilet.

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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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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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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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