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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.