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Everyone has one nostril that is larger than the other.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.