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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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There are 60,000 miles of blood vessels in every adult human.
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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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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.