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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.
You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
On average, the stomach produces 2 L of hydrochloric acid per day.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.