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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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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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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.