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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.
The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.