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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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Illicit drug use costs the United States approximately $181 billion every year.

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

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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

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