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There are 60,000 miles of blood vessels in every adult human.
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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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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.