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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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There are 20 feet of blood vessels in each square inch of human skin.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.