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Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.