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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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