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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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There are 60,000 miles of blood vessels in every adult human.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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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.