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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
There are more sensory neurons in the tongue than in any other part of the body.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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.