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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.