Use of alcohol, cigarettes, number of illicit drugs declines among U.S. teens

16 diciembre 2014

A national survey of students in U.S. middle schools and high schools shows some important improvements in levels of substance use. Both alcohol and cigarette use in 2014 are at their lowest points since the study began in 1975. Use of a number of illicit drugs also show declines this year.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/4clcA0Ufie0/141216082151.htm

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