Increased Use of Pots Over Cigarettes and Alcohol in Teens

by Mohamed Fathima S on  November 20, 2018 at 10:26 AM Drug News
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Adolescents' 'gateway pattern' of substance use is changing, where they increasingly resort to marijuana use as their first substance in the sequence of adolescent drug use. Before 2006, adolescents first experiment with cigarettes and alcohol before cannabis, after which the use of cigarettes and alcohol as the first substance reduced by 50%. The findings are reported in the journal Drug and Alcohol Dependence.
Increased Use of Pots Over Cigarettes and Alcohol in Teens
Increased Use of Pots Over Cigarettes and Alcohol in Teens

"Alcohol and cigarette use have precipitously declined in adolescent populations for 20 years, while marijuana use has not," said Katherine M. Keyes, PhD, associate professor of Epidemiology at the Columbia Mailman School. "The perceived risk of marijuana use to health among adolescents is declining as well, portending potential future increases. In short, the timing of substances in the 'gateway' sequence is changing, as public perceptions about drugs of abuse change."

The researchers used data from 40 annual surveys of American 12th graders to study historical trends in the average grade of onset of marijuana, alcohol, and cigarette use; the proportion who tried alcohol and/or cigarettes before first marijuana use, and the probability of marijuana use by 12th grade after trying alcohol/cigarettes. A subset of 246,050 students were asked when they first used each substance.

The average school grade during which young people first tried alcohol and cigarettes has increased. The biggest jump was seen for first cigarette, which rose from the average of nearly 8th grade in 1986 to 9th grade in 2016. The proportion of adolescents who used cigarettes in a grade before marijuana substantially declined. In 1995, 75 percent of 12th grade students who tried both cigarettes and marijuana used cigarettes in a grade before marijuana; by 2016, the proportion had fallen to 40 percent. The proportion who reported trying cigarettes in the same grade as marijuana has increased, from 20 percent in 1994 to 32 percent in 2016.

The average grade of first alcohol use edged up as well, from 9th grade in 1976 to midway between 9th and 10th grade in 2016. The percentage of students who tried alcohol before marijuana peaked in 1995, the year in which 69 percent of adolescents reported drinking alcohol in a grade before marijuana use. This proportion fell rapidly by 1999 to 47 percent.

"Reducing adolescent smoking has been a remarkable achievement of the past 20 years," noted Keyes. "Now, the more prominent role of marijuana in the early stages of drug use sequences and its implications are important to continue tracking. Its increasing use suggests that marijuana is, and will continue to be, a key target of drug use prevention efforts."



Source: Eurekalert

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