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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 people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Medication errors are more common among seriously ill patients than with those with minor conditions.