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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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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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If you could remove all of your skin, it would weigh up to 5 pounds.
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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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Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.