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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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

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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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