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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
Thyroid conditions may make getting pregnant impossible.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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