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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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There are 20 feet of blood vessels in each square inch of human skin.