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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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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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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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