If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Thyroid conditions may make getting pregnant impossible.
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Excessive alcohol use costs the country approximately $235 billion every year.
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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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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.