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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Asthma cases in Americans are about 75% higher today than they were in 1980.
The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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 heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.