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There are 60,000 miles of blood vessels in every adult human.
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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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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
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Thyroid conditions may make getting pregnant impossible.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.