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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
On average, the stomach produces 2 L of hydrochloric acid per day.
The average office desk has 400 times more bacteria on it than a toilet.
Blood is approximately twice as thick as water because of the cells and other components found in it.
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.