Government sources
“Cannabis Use Among Students in Grades 8, 10, and 12 declined!”
”The observed overall decreases in cannabis use among students in grades 8, 10, and 12 might be associated with changes in the availability of cannabis among persons aged ≥21 years as well as limited opportunities to engage in use. The period 2012–2014 includes the legalization of nonmedical cannabis in Washington in 2012.
https://www.cdc.gov/mmwr/volumes/73/wr/mm7302a1.htm
Cannabis teen use falls after cannabis legalisation
https://www.cdc.gov/healthyyouth/data/yrbs/pdf/YRBS_Data-Summary-Trends_Report2023_508.pdf
Scientific Studies
“Cannabis legalization and rising sales have not contributed to increase in adolescents substance abuse, study finds”
“Recreational Marijuana Laws and Teen Marijuana Use, 1993-2021”
“After legalization, there was no evidence of an increase in marijuana use.”
Source https://jamanetwork.com/journals/ja...ign=ftm_links&utm_content=tfl&utm_term=042424
“National Survey Results on Drug Use, 1975-2023: Secondary School Students”
Marijuana (Cannabis)
The percentage of youth who have used marijuana had not returned to pre-pandemic, 2020 levels by 2023. Lifetime, past 12-month, and past 30-day use all dropped precipitously from 2020 (before the pandemic) to 2021 (during the pandemic), and have since remained at the new, lower levels. …
The lower prevalence levels in 2021 and afterwards mark the first substantial change in marijuana prevalence in more than a decade; previous to 2021 marijuana levels had hovered without any systematic trending for about a decade.”
Source https://monitoringthefuture.org/wp-content/uploads/2023/12/mtf2023.pdf
Study finds high school students no more likely to use marijuana after legalization
“No association was found between the legalization of cannabis for adult recreational use and adolescent use,…”
https://medicalxpress.com/news/2023-11-high-school-students-marijuana-legalization.html
Estimating the effects of legalizing recreational cannabis on newly incident cannabis use
“Legalized cannabis retail sales might be followed by the increased occurrence of cannabis onsets for older adults, but not for underage persons who cannot buy cannabis products in a retail outlet.”
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9302774/
State Marijuana Legalization Has ‘Not Really Impacted’ Teen Use, Federal Official Says As New Youth Survey Shows Stable Trends
“So whatever is happening with adult-use [legalization] across the country has not really impacted the younger people according to the data here,” she said.”
https://www.marijuanamoment.net/sta...says-as-new-youth-survey-shows-stable-trends/
Reported drug use among adolescents continued to hold below pre-pandemic levels in 2023”
“Cannabis use remained stable for all three grades surveyed, with 8.3% of eighth graders, 17.8% of 10th graders, and 29.0% of 12thgraders reporting cannabis use in the past year”
Source https://nih.gov/news-events/news-releases/reported-drug-use-among-adolescents-continued-hold-below-pre-pandemic-levels-2023
Pre-Post Cannabis Legalization for Adult Use: A Trend Study of Two Cohorts of Young Adult Cannabis Users in Los Angeles
“Notably, frequency of cannabis use (days or hits per day) did not significantly differ between the pre- and post-AUL cohorts, except for greater use of edibles, despite potentially greater access to cannabis.”
Source https://www.tandfonline.com/doi/abs/10.1080/02791072.2023.2282515
Paradoxically, the legalization of cannabis has decreased use among adolescents”
Colorado Department of Public Health and Environment found that cannabis use among students aged 14–18 declined from a stable rate of about 21% during 2005–19 to 13% in 2021
Nationwide usage patterns seem to show a similar dip
A hemisphere away, Uruguay saw an initial spike in usage among those age 18 to 21 as legalization rolled out in 2014. But usage quickly went back to pre-legalization levels, according to survey results3. The survey also found use hasn’t exploded in people under 21
Source https://nature.com/articles/d41586-023-03860-3
Findings by American State
Illinois 2023 Annual Cannabis Report
"In Illinois, there was a decrease in past-year initiation among those 12-17 years old between 2018-2019 and 2021"
Source https://dph.illinois.gov/content/da...ess/medical-cannabis/cannabis-report_2023.pdf
Montana State economist publishes research on teenage marijuana use
"For instance, Anderson and Rees found little evidence that legalization promotes marijuana use among teens. Likewise, there was convincing evidence that young adults consume less alcohol where medical marijuana is legal. Several studies also showed that opioid-related deaths and prescriptions for pain medications decreased when medical marijuana was legalized. Other studies that examined the relationship between marijuana use and tobacco use, finding that youth tobacco use decreased when medical or recreational marijuana was legalized. Still others noted that with legalization,
the suicide rate for young men in their 20s and 30s was reduced." 
Source https://www.montana.edu/news/23899/...-teenage-marijuana-use-in-prestigious-journal
Video: Colorado Teen cannabis use falls.
Source https://youtu.be/na6jJCCn_dM
Other Country Findings
BC Canada - Student cannabis use cut in half.
“When it comes to substance use, students are smoking tobacco and cannabis less than ever. In 1992, 60% of youth had smoked tobacco, but this past year, just 15% had. In 2023, 22% had tried cannabis, down from 25% in 2018 and 41% in 1998. About 38% of youth have tried alcohol, down from 67% back in 1992.”
Source https://mcs.bc.ca/pdf/2023_bcahs_the_big_picture.pdf
Canada: Daily or almost daily [#cannabis] use was also unchanged among 16 to 19 year olds (21% vs. 19%)…”
Source https://www.canada.ca/en/health-canada/news/2021/12/health-canada-releases-new-data-on-cannabis-use-in-canada.html
Teen cannabis use falls in the UK
Drug misuse in England and Wales: year ending March 2023
“The prevalence of drug use was higher in people aged 16 to 24 years, with 17.6% (around one million people) reporting any drug use, a decrease compared with the year ending March 2020 (21.0%); this was largely a result of falls in cannabis use (from 18.7% to 15.4%) in this age group.”
Source https://www.ons.gov.uk/peoplepopula...yearendingmarch2023#strengths-and-limitations
United Kingdom: “Cannabis use also dipped among teens,…”
Source https://dailymail.co.uk/health/article-12863425/Health-conscious-Gen-Zs-shun-drugs-cannabis-use-nearly-plunges-time-low-hippy-crack-inhalation-halves-year-16-24-year-olds-taking-ketamine-shrooms-LSD.html
News Reports
“We found limited associations between recreational cannabis legalization and retail sales with adolescent substance use, extending previous findings.”
Source https://www.msn.com/en-us/health/ot...se-in-substance-abuse-study-finds/ar-AA1ngaAq
Government Survey Data Shows Nearly 20 Percent Decline in Teen Marijuana Use Over Past Decade
"Specifically, the NSDUH data reports that the percentage of those ages 12 to 17 who reported having ever tried marijuana fell 18 percent from 2014 to 2023. Those reporting having consumed cannabis during the past year fell 15 percent. The percentage of teens reporting current marijuana use fell 19 percent."
Source https://norml.org/blog/2024/07/31/government-survey-data-shows-nearly-20-percent-decline-in-teen-marijuana-use-over-past-decade/
To Reduce Teen Marijuana Consumption, Legalize It for Adults
"According to a different survey, the latest National Survey on Drug Use and Health (NSDUH), teen marijuana use has dropped considerably over the past decade, a time during which several states have legalized recreational marijuana. The survey found the percentage of persons aged 13 to 17 stating they have ever used marijuana fell 18 percent between 2014 and 2023. The number of teens using marijuana in the past year fell 15 percent during that period, and the percentage of teens currently using marijuana fell 19 percent but dropped only slightly between 2022 and 2023."
Source https://www.cato.org/blog/reduce-teen-marijuana-consumption-legalize-it-adults
“Youth drinking is declining” Cannabis use too!
“People we have spoken to about our research often assume that if young people aren’t drinking, they must be doing something else instead that is equally (or even more) harmful, such as smoking cigarettes or cannabis.
In fact, the opposite is true: smoking and cannabis use decreased at the same time as alcohol.”
Source https://uk.news.yahoo.com/youth-drinking-declining-myths-trend-122933232.html
“Following the enactment of both medical cannabis access laws and adult use marijuana laws, there has not been any significant rise in self-reported marijuana use by adolescents.”
Source https://norml.org/marijuana/fact-sheets/marijuana-regulation-and-teen-use-rates
Cannabis legalization decreases adolescent use”
“Instead of increasing, substance use among teenagers showed modest decreases. This included the use of cannabis, alcohol, and e-cigarettes.”
Source https://www.msn.com/en-us/health/ot...ot-increase-youth-substance-abuse/ar-AA1nmiDZ
“Cannabis Use Among Students in Grades 8, 10, and 12 declined!”
”The observed overall decreases in cannabis use among students in grades 8, 10, and 12 might be associated with changes in the availability of cannabis among persons aged ≥21 years as well as limited opportunities to engage in use. The period 2012–2014 includes the legalization of nonmedical cannabis in Washington in 2012.
https://www.cdc.gov/mmwr/volumes/73/wr/mm7302a1.htm
Cannabis teen use falls after cannabis legalisation
https://www.cdc.gov/healthyyouth/data/yrbs/pdf/YRBS_Data-Summary-Trends_Report2023_508.pdf
Scientific Studies
“Cannabis legalization and rising sales have not contributed to increase in adolescents substance abuse, study finds”
“Recreational Marijuana Laws and Teen Marijuana Use, 1993-2021”
“After legalization, there was no evidence of an increase in marijuana use.”
Source https://jamanetwork.com/journals/ja...ign=ftm_links&utm_content=tfl&utm_term=042424
“National Survey Results on Drug Use, 1975-2023: Secondary School Students”
Marijuana (Cannabis)
The percentage of youth who have used marijuana had not returned to pre-pandemic, 2020 levels by 2023. Lifetime, past 12-month, and past 30-day use all dropped precipitously from 2020 (before the pandemic) to 2021 (during the pandemic), and have since remained at the new, lower levels. …
The lower prevalence levels in 2021 and afterwards mark the first substantial change in marijuana prevalence in more than a decade; previous to 2021 marijuana levels had hovered without any systematic trending for about a decade.”
Source https://monitoringthefuture.org/wp-content/uploads/2023/12/mtf2023.pdf
Study finds high school students no more likely to use marijuana after legalization
“No association was found between the legalization of cannabis for adult recreational use and adolescent use,…”
https://medicalxpress.com/news/2023-11-high-school-students-marijuana-legalization.html
Estimating the effects of legalizing recreational cannabis on newly incident cannabis use
“Legalized cannabis retail sales might be followed by the increased occurrence of cannabis onsets for older adults, but not for underage persons who cannot buy cannabis products in a retail outlet.”
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9302774/
State Marijuana Legalization Has ‘Not Really Impacted’ Teen Use, Federal Official Says As New Youth Survey Shows Stable Trends
“So whatever is happening with adult-use [legalization] across the country has not really impacted the younger people according to the data here,” she said.”
https://www.marijuanamoment.net/sta...says-as-new-youth-survey-shows-stable-trends/
Reported drug use among adolescents continued to hold below pre-pandemic levels in 2023”
“Cannabis use remained stable for all three grades surveyed, with 8.3% of eighth graders, 17.8% of 10th graders, and 29.0% of 12thgraders reporting cannabis use in the past year”
Source https://nih.gov/news-events/news-releases/reported-drug-use-among-adolescents-continued-hold-below-pre-pandemic-levels-2023
Pre-Post Cannabis Legalization for Adult Use: A Trend Study of Two Cohorts of Young Adult Cannabis Users in Los Angeles
“Notably, frequency of cannabis use (days or hits per day) did not significantly differ between the pre- and post-AUL cohorts, except for greater use of edibles, despite potentially greater access to cannabis.”
Source https://www.tandfonline.com/doi/abs/10.1080/02791072.2023.2282515
Paradoxically, the legalization of cannabis has decreased use among adolescents”
Colorado Department of Public Health and Environment found that cannabis use among students aged 14–18 declined from a stable rate of about 21% during 2005–19 to 13% in 2021
Nationwide usage patterns seem to show a similar dip
A hemisphere away, Uruguay saw an initial spike in usage among those age 18 to 21 as legalization rolled out in 2014. But usage quickly went back to pre-legalization levels, according to survey results3. The survey also found use hasn’t exploded in people under 21
Source https://nature.com/articles/d41586-023-03860-3
Findings by American State
Illinois 2023 Annual Cannabis Report
"In Illinois, there was a decrease in past-year initiation among those 12-17 years old between 2018-2019 and 2021"
Source https://dph.illinois.gov/content/da...ess/medical-cannabis/cannabis-report_2023.pdf
Montana State economist publishes research on teenage marijuana use
"For instance, Anderson and Rees found little evidence that legalization promotes marijuana use among teens. Likewise, there was convincing evidence that young adults consume less alcohol where medical marijuana is legal. Several studies also showed that opioid-related deaths and prescriptions for pain medications decreased when medical marijuana was legalized. Other studies that examined the relationship between marijuana use and tobacco use, finding that youth tobacco use decreased when medical or recreational marijuana was legalized. Still others noted that with legalization,
the suicide rate for young men in their 20s and 30s was reduced." Source https://www.montana.edu/news/23899/...-teenage-marijuana-use-in-prestigious-journal
Video: Colorado Teen cannabis use falls.
Source https://youtu.be/na6jJCCn_dM
Other Country Findings
BC Canada - Student cannabis use cut in half.
“When it comes to substance use, students are smoking tobacco and cannabis less than ever. In 1992, 60% of youth had smoked tobacco, but this past year, just 15% had. In 2023, 22% had tried cannabis, down from 25% in 2018 and 41% in 1998. About 38% of youth have tried alcohol, down from 67% back in 1992.”
Source https://mcs.bc.ca/pdf/2023_bcahs_the_big_picture.pdf
Canada: Daily or almost daily [#cannabis] use was also unchanged among 16 to 19 year olds (21% vs. 19%)…”
Source https://www.canada.ca/en/health-canada/news/2021/12/health-canada-releases-new-data-on-cannabis-use-in-canada.html
Teen cannabis use falls in the UK
Drug misuse in England and Wales: year ending March 2023
“The prevalence of drug use was higher in people aged 16 to 24 years, with 17.6% (around one million people) reporting any drug use, a decrease compared with the year ending March 2020 (21.0%); this was largely a result of falls in cannabis use (from 18.7% to 15.4%) in this age group.”
Source https://www.ons.gov.uk/peoplepopula...yearendingmarch2023#strengths-and-limitations
United Kingdom: “Cannabis use also dipped among teens,…”
Source https://dailymail.co.uk/health/article-12863425/Health-conscious-Gen-Zs-shun-drugs-cannabis-use-nearly-plunges-time-low-hippy-crack-inhalation-halves-year-16-24-year-olds-taking-ketamine-shrooms-LSD.html
News Reports
“We found limited associations between recreational cannabis legalization and retail sales with adolescent substance use, extending previous findings.”
Source https://www.msn.com/en-us/health/ot...se-in-substance-abuse-study-finds/ar-AA1ngaAq
Government Survey Data Shows Nearly 20 Percent Decline in Teen Marijuana Use Over Past Decade
"Specifically, the NSDUH data reports that the percentage of those ages 12 to 17 who reported having ever tried marijuana fell 18 percent from 2014 to 2023. Those reporting having consumed cannabis during the past year fell 15 percent. The percentage of teens reporting current marijuana use fell 19 percent."
Source https://norml.org/blog/2024/07/31/government-survey-data-shows-nearly-20-percent-decline-in-teen-marijuana-use-over-past-decade/
To Reduce Teen Marijuana Consumption, Legalize It for Adults
"According to a different survey, the latest National Survey on Drug Use and Health (NSDUH), teen marijuana use has dropped considerably over the past decade, a time during which several states have legalized recreational marijuana. The survey found the percentage of persons aged 13 to 17 stating they have ever used marijuana fell 18 percent between 2014 and 2023. The number of teens using marijuana in the past year fell 15 percent during that period, and the percentage of teens currently using marijuana fell 19 percent but dropped only slightly between 2022 and 2023."
Source https://www.cato.org/blog/reduce-teen-marijuana-consumption-legalize-it-adults
“Youth drinking is declining” Cannabis use too!
“People we have spoken to about our research often assume that if young people aren’t drinking, they must be doing something else instead that is equally (or even more) harmful, such as smoking cigarettes or cannabis.
In fact, the opposite is true: smoking and cannabis use decreased at the same time as alcohol.”
Source https://uk.news.yahoo.com/youth-drinking-declining-myths-trend-122933232.html
“Following the enactment of both medical cannabis access laws and adult use marijuana laws, there has not been any significant rise in self-reported marijuana use by adolescents.”
Source https://norml.org/marijuana/fact-sheets/marijuana-regulation-and-teen-use-rates
Cannabis legalization decreases adolescent use”
“Instead of increasing, substance use among teenagers showed modest decreases. This included the use of cannabis, alcohol, and e-cigarettes.”
Source https://www.msn.com/en-us/health/ot...ot-increase-youth-substance-abuse/ar-AA1nmiDZ
