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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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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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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.