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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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