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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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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

