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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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.