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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.
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Your heart beats over 36 million times a year.