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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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.