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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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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.