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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 more nerve cells in one human brain than there are stars in the Milky Way.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.