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Did you know?
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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.