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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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There are 60,000 miles of blood vessels in every adult human.
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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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There are more sensory neurons in the tongue than in any other part of the body.
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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.