If you could remove all of your skin, it would weigh up to 5 pounds.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
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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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Cyanide works by making the human body unable to use oxygen.