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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Cyanide works by making the human body unable to use oxygen.
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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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.