The ‘gateway drug’ is alcohol, not marijuana.

Results from the Guttman scale indicated that alcohol represented the “gateway” drug, leading to the use of tobacco, marijuana, and other illicit substances. Moreover, students who used alcohol exhibited a significantly greater likelihood of using both licit and illicit drugs. The findings from this investigation support that alcohol should receive primary attention in school-based substance abuse prevention programming, as the use of other substances could be impacted by delaying or preventing alcohol use.
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