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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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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.