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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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There are more bacteria in your mouth than there are people in the world.
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Everyone has one nostril that is larger than the other.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.