"Consistent with the results of previous researchers,2 there was no evidence that the legalization of medical marijuana encourages marijuana use among youth. Moreover, the estimates reported in the Table showed that marijuana use among youth may actually decline after legalization for recreational purposes. This latter result is consistent with findings by Dilley et al4 and with the argument that it is more difficult for teenagers to obtain marijuana as drug dealers are replaced by licensed dispensaries that require proof of age.6"
"Concerns about laws and policy measures that may inadvertently affect youth drug use merit careful consideration. Our study does not show evidence of a clear relationship between legalization of marijuana for medical purposes and youth drug use for any age group, which may provide some reassurance to policymakers who wish to balance compassion for individuals who have been unable to find relief from conventional medical therapies with the safety and well-being of youth.
"The most recent data on drug use among students were reported in the 2015 European School Survey Project on Alcohol and Other Drugs (ESPAD). Lifetime use of cannabis and other illicit substances among Portuguese students was slightly lower than the European average (based on data from 35 countries), with lifetime use of new psychoactive substances much lower than the average. Similarly, use of cigarettes in the last 30 days was just below the European average and alcohol use and binge drinking in the last 30 days were much lower than the average.
" In the fifteen-year (2004–2018) combined samples of young adults aged 21–30, 1.5% report having ever used any drug by injection not under a doctor’s orders, and 0.5% reported doing so on 40 or more occasions (Table 4-1a). Thus, about 1 in every 67 respondents has ever used an illicit drug by injection, and about 1 in every 200 respondents reports an extended pattern of use as indicated by use on 40 or more occasions. There are appreciable gender differences—2.2% of males vs.
"Cigarette smoking has been shown in other studies to act as a 'gateway' to cannabis use and further risk taking behaviours. This study aims to establish the prevalence of cigarette smoking and cannabis use in Irish teenagers, to quantify the strength and significance of the association of cigarette smoking and cannabis use and other high risk behaviours and to examine whether the above associations are independent of social networking (O'Cathail, et al. 2011).
"Marijuana, the most widely used of the illicit drugs, did not show any significant change in annual prevalence this year in any of the three grades, nor in the three grades combined. After rising for several years, the annual prevalence of marijuana has more or less leveled out since about 2010.
" Figure 5-4a and Table 5-5d provide trends in daily marijuana use, defined as using marijuana on 20 or more occasions in the prior 30 days. Among 12th grade students, the 2019 level of 6.4% is the highest level recorded by the survey since 2013. About one in every 16 twelfth grade students in 2019 was a daily or near-daily marijuana user. Daily marijuana use significantly increased in 8th and 10th grade in 2019, to 1.3% and 4.8%, respectively.
Prevalence of Alcohol Use Among Young People in Australia: "Alcohol use becomes more common with increasing age with 76% of 17-year-olds having consumed alcohol in the year preceding the survey, compared to 19% of 12-year-olds.
"Only 32% of all students reported never consuming alcohol.
Prevalence of Tobacco Use Among Young People in Australia: "In 2014, 81% of all secondary students in Australia had no experience with smoking. While the proportion of students who had never smoked decreased with age, 61% of 17-year-olds had still never smoked.
"Around three per cent of all students had smoked more than 100 cigarettes in their lifetime, which peaked at eight per cent for 17-year-olds.
"The proportion of students smoking in the previous four weeks (past-month smokers) increased from one per cent of 12-year-olds to 17% of 17-year-olds.
"The proportion of students who were current smokers in 2014 increased from one per cent of 12-year-olds to 12% of 17-year-olds.
Prevalence of Cannabis Use Among Youth in Australia: "Cannabis was the illicit substance most commonly used by secondary school students and prevalence was highest in the older age groups. Sixteen per cent of secondary students surveyed indicated they had used cannabis at some time in their lives with seven per cent using it in the past month and four per cent using it in the past week.
"In all recency periods the proportion of students using cannabis increased significantly with age (p<0.01).