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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.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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There are more bacteria in your mouth than there are people in the world.
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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.