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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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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.