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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 longest a person has survived after a heart transplant is 24 years.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.