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Did you know?
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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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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There are more sensory neurons in the tongue than in any other part of the body.