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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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There are 20 feet of blood vessels in each square inch of human skin.
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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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.