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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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The average adult has about 21 square feet of skin.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.