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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

