culture since the middle of the last century. Popularized in
the 1960s by music and mass media, they invade all aspects of society.An estimated 208 million people internationally consume illegal drugs. In the United States, results from the 2007 National Survey on Drug Use and Health showed that 19.9 million Americans (or 8% of the population aged 12 or older) used illegal drugs in the month prior to the survey.