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Thyroid conditions may make getting pregnant impossible.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.