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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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

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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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

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