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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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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.