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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.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.