Adolescent Marijuana Research Articles

Effects of racial teasing on adolescent marijuana use and nicotine vaping: An analysis of the Virginia Youth Risk Behavior Surveillance System

BackgroundDespite adverse effects of tobacco and marijuana use on the adolescent brain, its use among youth remains high. Previous research shows associations between bullying and risks of substance use; less is known about racial teasing. This study examines associations of racial teasing, marijuana and/or electronic vapor products (EVP) use among adolescents, using 2021 Virginia Youth Risk Behavior Surveillance System (VYRBSS). MethodsVYRBSS is a self-reported survey which collects information on experiences with racial teasing and substance use. This analysis included 3,083 high school students ≥ 12 years old. Descriptive analysis and logistic regression models were performed for categorical variables. Multivariable models were adjusted for confounders. ResultsRacial teasing was associated with marijuana (AOR 1.89; CI 1.43–2.48) and EVP use (AOR 2.52; CI 1.91–3.31). Compared to Whites; Asians, Blacks, and Latinos were more likely to report racial teasing. Older heterosexual females reported higher use of marijuana and EVP. Blacks reported greater use of marijuana, whereas Whites were more likely to use EVP. EVP use was higher in females (AOR 1.73, CI 1.34–2.23), bisexual youth (AOR 1.68, CI 1.23, 2.30) and poor mental health (AOR 1.49, CI 1.16, 1.92). Marijuana use was associated with bisexuality (AOR 1.75, CI 1.28–2.39) and poor mental health (AOR 1.62, CI 1.27–2.07) as well. ConclusionsEvery effort should be made by public health professionals in Virginia to prevent racial teasing among adolescents because it increases the odds of substance use, particularly in older females, youth who identify as bisexual, and those reporting poor mental health.

Exploring the relationship of rurality and region: An analysis of adolescent marijuana use in the United States

Marijuana use among adolescents and young adults has increased, however, there is a paucity of research concerning marijuana use among adolescents in rural areas. Current literature holds the assumption that adolescents in rural areas tend to use less marijuana and marijuana associated products compared with youth from urban and suburban areas. However, geographical features may contribute to unique stressors experienced by rural youth, resulting in distinct differences in usage that have been previously unexplored. The purpose of the current study was to explore the relationship between rurality and geographic region by examining patterns of lifetime marijuana use in 12th graders across various geographical backgrounds. Using data from the Monitoring the Future Study database, participants were classified based on rurality (rural, medium suburban/urban, large suburban/urban) and geographic region (Northeast, Midwest, South, West) and data was analyzed to investigate the differences in lifetime marijuana and hash usage. Results demonstrated that rural adolescents in the Northeast and West reported lifetime marijuana and hash product use at the same level as their urban/suburban counterparts; however, there were differences across rurality among Midwest and Southern regions. These results suggest that lifetime marijuana use among rural adolescents is not uniform across geographic regions, indicating that geography should be heavily considered when formulating preventative and educational marijuana programs.

Navigating the Grey Zone: The Impact of Legislative Frameworks in North America and Europe on Adolescent Cannabis Use-A Systematic Review.

This paper aims to systematically review the impact of legislative framework changes in North America and Europe on adolescent cannabis use. It not only seeks to examine the prevalence of adolescent marijuana use following legislative changes but also to identify the driving forces behind fluctuations in use and to address the gaps left by previous studies. A systematic literature review was conducted in selected databases. After screening English-language publications dating from 2013 to 2023 (n = 453 studies), 24 met the inclusion criteria. Articles were considered if they analyzed the impact of legislative changes on adolescent cannabis use in countries across North America and Europe. The overall findings suggest an inconsistency regarding the prevalence of cannabis use among youth and adolescents following policy changes. The effects of modifications in cannabis policies on marijuana consumption are complex and influenced by various factors. These include the details of legislation, societal perspectives, enforcement methods, socioeconomic status, and cultural background. The results of this analysis reveal a nuanced reality. Although research suggests a rise in cannabis use after legalization, there are variations in the outcomes observed. This highlights the significance of considering context and demographics. Moreover, studies shed light on how specific policy changes, such as depenalization, can affect cannabis use.

The Relative Impacts of Peer Disapproval, Parental Disapproval, and Perceptions of Risk on Adolescent Marijuana Use

Adolescent drug use has consistently been a concern for researchers and policymakers for decades as its early onset and continued use can lead to a variety of negative life outcomes. Concerns related to marijuana use have emerged in recent years as states have begun to change laws regarding recreational cannabis use. The current study uses data from a cohort of students in Massachusetts to understand how these changes may impact marijuana use. Findings from this study suggest that nearly three years after the first recreational marijuana retail center opened, the protective features of parental norms toward marijuana use may no longer be relevant in protecting young people from early experimentation with drugs. Policy implications are discussed.

The effect of marijuana use in adolescence on college and graduate degree attainment

We estimate the long-term effect of using marijuana in adolescence on college and graduate degree attainment measured approximately 20 years later. We rely on the first two waves (1994–1996) and the fifth wave (2016–2018) of the National Longitudinal Study of Adolescent to Adult Health and estimate instrumental variables models that exploit the network structure at the second degree by using marijuana use status of friends of friends who are not themselves friends of the respondent in order to instrument for the respondent’s marijuana use. Our models also include school and grade fixed effects. Marijuana use in adolescence leads to a large reduction in the likelihood of college and graduate degree attainment by the time respondents are aged 33–43 years old.

Perceived Risk of Weekly Marijuana Use Among Students Participating in the National Survey on Drug Use and Health

This study sought to assess the relationship of risk perception of weekly marijuana use and the influence of parental, peer, and school factors as predictors among U.S. adolescents. Data for this study was derived from the 2020 National Survey on Drug Use and Health. Students who reported strong parental involvement/support, peer disapproval of marijuana use, low perception of peer use, and enjoyed school were more likely to report that using marijuana weekly was a risk behavior. Students who reported no lifetime alcohol or illicit drug use were more likely to view weekly marijuana use as a risk behavior. Differences were also observed for sex of respondent. This study further adds evidence of the influence of parental, peer, and school factors as effective strategies to control adolescent marijuana use. There is a need for multidimensional programs that target adolescents’ perceptions of risk of marijuana use, as well as targeting significant others.

Epidemiology, Health Implications, and Resilience Factors in Adolescent Marijuana Use: A Comprehensive Review

Epidemiology, Health Implications, and Resilience Factors in Adolescent Marijuana Use: A Comprehensive Review

Gone with the weed: incidents of adolescent marijuana use in the United States, 1976–2021

This study sought to examine grouped and right-censored (GRC) counts of adolescent marijuana useand estimate its temporal trajectories and sociodemographic disparities over almost half a century. After compiling 46 waves of nationally representative data from the Monitoring the Future (MTF) study from 1976 to 2021 (sample size=491,348), we utilized an innovative modified Poisson (mixture) approach to analyze past-year marijuana use quantified by GRC counts. The overall reduction in incidence rates of marijuana use was attributable to an almost 40% reduction in the risk of marijuana use (with the proportion of at-risk adolescents at 51.36% in 1979 and 31.53% in 2021). Despite substantial changes over the study period, the recent incidence rates for at-risk individuals were similar to those in the early 1980s. Living in an intact family was a protective factor against adolescent marijuana use over time. The incidence rates of marijuana use among at-risk students, especially those from disadvantaged families, remained high over the study period. The modified Poisson (mixture) approach serves as the preferred tool for modeling GRC responses. It is essential to distinguish among risk, at-risk incidence, and overall incidence when assessing substance use and other risky behaviors.

Associations between Adolescent Marijuana Use, Driving after Marijuana Use and Recreational Retail Sale in Colorado, USA

Objective We investigated associations between the retail distribution of recreational marijuana in Colorado and (i) past 30-day marijuana use and (ii) driving after marijuana use (DAMU) among a representative sample of public high school students using four waves of data from a state surveillance system. Methods Past 30-day marijuana use was assessed among all sampled students (n = 85,336). DAMU was assessed among students 15 years or older who indicated driving (n = 47,518). Modified Poisson regression with robust variance estimates was used to estimate prevalence ratios (PR) comparing the pre-distribution (2013) and post-distribution (2015, 2017, 2019) periods for marijuana-related behaviors. Frequency of behavioral engagement was assessed using a multinomial approach. Results An estimated 20.3% of students engaged in past 30-day marijuana use and 10.5% of student drivers engaged in DAMU. Retail distribution of recreational marijuana was not significantly associated with the prevalence of any marijuana use or DAMU. However, it was associated with 1.16 (95% CI: 1.04–1.29) times the prevalence of using marijuana one or two times in the last 30 days, 1.27 (1.03, 1.55) times the prevalence of DAMU one time, and 0.82 (0.69, 0.98) times the prevalence of DAMU six or more times. No significant associations were observed for the remaining frequency categories. Conclusions Approximately 1 in 10 students who drive reported DAMU. Varying prevalence in the frequency of past 30-day marijuana use and DAMU was observed following the retail distribution of recreational marijuana in Colorado. Care should be taken to properly educate adolescent drivers regarding the dangers of DAMU.

Trends in coping reasons for marijuana use among U.S. adolescents from 2016 to 2022

ObjectiveThis study examines historical trends in coping reasons for marijuana use among adolescents (1976–2022) and explores sociodemographic variations in recent years (2016–2022). MethodData from U.S. national samples of 12th grade adolescents in the Monitoring the Future (MTF) study were used to examine long-term trends (1976–2022, N = 43,237) and recent differences by sociodemographic characteristics (2016–2022, N = 3,816). Measures included marijuana use, coping reasons for use, and sociodemographic characteristics. ResultsThe most prevalent coping reason across time was “relax,” endorsed by 52.9% of past 12-month users. Coping reasons mostly exhibited significant increases over time. Sociodemographic factors were associated with coping reasons. Females had higher odds of using marijuana to escape problems and get through the day (vs. males). Black respondents were more likely to use marijuana to get through the day, and Hispanic respondents were more likely to use to relax (vs. White respondents). Those with lower (vs. higher) parental education were more likely to use due to anger/frustration and to escape problems. Adolescents who used marijuana frequently (vs. less often) had higher odds of endorsing all coping reasons. There was no robust evidence of interactions between sociodemographic characteristics and year. ConclusionsResults indicate a consistent increase in coping reasons for adolescent marijuana use over time, with variations based on sociodemographic characteristics. The findings highlight the importance of understanding subpopulations of adolescents who have higher risk of coping-related marijuana use.

Maternal childhood adversity and adolescent marijuana use at age 17 years: The role of parental mental health and parenting behaviors.

Children's risk for marijuana use may be linked to their parents' history of childhood adversity, yet little is known about the mechanisms underlying this link. This study examined whether maternal parenting behavior and mental health serve as mechanisms linking maternal childhood adversity to their children's marijuana use at age 17 years, by gender. Data were from the Young Women and Child Development Study (59% male), a longitudinal panel study, which began in 1988 and followed mother-child dyads for 17 years (n = 240). Participants were recruited from health and social services agencies located in a metropolitan region of Washington State. Hypotheses were tested using Structural Equation Modeling in Mplus. Multiple-group analysis was conducted to evaluate potential gender differences. Results showed that maternal childhood adversity was associated with their mental health outcomes (β = .32, p < .001), which in turn was predictive of mothers' harsh parenting (β = .27, p < .01). Maternal harsh parenting behavior was then associated with their children's marijuana use at age 17 years (β = .34, p < .001). Multiple group analyses revealed that the path from harsh parenting to adolescent marijuana use differed across genders being only significant for boys (β = .42, p < .001). The intergenerational impact of childhood adversity highlights the need for interventions that target both parents and children. This would support teen mothers with a history of childhood adversity to acquire skills and knowledge to help mitigate its impact on their parenting behaviors and offset risks for their children.

The Theory of Planned Behavior and Adolescent Marijuana Use: Examining the Moderating Effects of Cigarette and E-cigarette Co-use

Background: This study examines the moderating effects of cigarette and e-cigarette co-use on the relationship between adolescent intention to use and marijuana use using the Theory of Planned Behavior (TPB). Method: A total of 217,276 adolescents in grades 6, 8, 10, and 12 were assessed using data from a large statewide surveillance dataset of youth self-report of substance use and related risk and protective factors. Structural Equation Models consisting of latent variables representing behavioral, normative, and control beliefs were regressed on intention to use and past 30-day marijuana use. Tests of moderation of the pathways between intention and marijuana use were used to test hypotheses, and grade level, gender, and race were included as covariates. Results: The overall model fit of the TPB predicting adolescent marijuana use provided good fit to the data (χ2(127) = 58042, p < 0.01, CFI = 0.95, TLI = 0.94, RMSEA = 0.04, SRMR = 0.03). After controlling for features of the model that may serve as common liability to substance use, past 30-day cigarette use moderated the relationship between intention and marijuana use (β = 0.46, p <.001). A stronger moderating effect was observed with past 30-day e-cigarette use (β = 0.63, p <.001). Past 12-month nicotine vaping (β = 0.44, p <.001) and flavor-only vaping (β = 0.30, p <.001) strengthened the relationship between intention and marijuana use. Conclusion: Adolescent marijuana use prevention may be enhanced by targeting general inhalation behaviors and restricting access to cigarettes, e-cigarettes, and flavor-only vaping products.

Brain and Behavior: Cognitive Failures are Associated with Sensation Seeking via Adolescent Marijuana Use

A main concern regarding adolescent marijuana use is its long-term negative health effects, such as alterations to brain structure and function, which can lead to deficits in working memory (e.g., cognitive failures). This raises concerns for the development of proper executive functioning in marijuana-using adolescents. As such, understanding factors leading to adolescent marijuana use, such as personality, can allow for an assessment of predispositions that could pose a threat to their cognitive health. This study examined whether adolescent marijuana use mediates the effect of sensation-seeking on cognitive failures. An adolescent sample (N=165; 48.8% Female, 88.6% White, 84.9% Hispanic/Latinx, Mage=14.9) from a larger multi-wave study was assessed. Results show that high sensation-seeking tendencies predicted greater marijuana use (effect=0.08, p=0.02), and that marijuana use predicted greater false triggering (effect=0.96, p=0.01). Furthermore, a significant indirect effect between sensation-seeking and false triggering through days of marijuana use (effect=0.08, CI [0.01, 0.20]) was found. Findings suggest that marijuana use can impact executive functioning within the prefrontal cortex via alterations to myelination due to false signaling on oligodendrocytes. Additionally, a mature striatum coupled with an underdeveloped prefrontal cortex during adolescence may predispose sensation-seeking adolescents to try marijuana without considering the risk of memory impairments.

A Comparison of Task-Based and Questionnaire Assessments of Executive Control Aspects in Relation to Adolescent Marijuana Initiation

Prior research has linked deficits in executive control (EC) to marijuana use in adolescents but has relied either primarily on adolescent self-report of EC or tasked-based EC, and focused on limited aspects of EC, usually inhibitory control. We examined unique associations of three established aspects of EC (inhibitory control, working memory, and flexible shifting) assessed with both performance on laboratory tasks and self-report in relation to marijuana initiation. Participants were 260 youth (ages 14-18 years) from a small Midwestern city in the United States enrolled in the adolescent phase (beginning in 2017) of an ongoing study of EC development recruited originally between 2006 and 2012 (46% male, 72% European American). The three aspects of executive control were measured in a laboratory setting with well-established performance-based measures and with a psychometrically-sound self-report survey instrument. Youth also provided self-report of marijuana initiation in a phone survey administered during their laboratory visit. Multiple logistic regression analysis indicated that flexible shifting as measured by a performance-based task was negatively and uniquely associated with marijuana initiation (AOR = 0.68, 95% CI = 0.48 - 0.91), and self-reported deficits in inhibitory control were positively associated with marijuana initiation (AOR = 1.92, 95% CI = 1.15 - 3.21). Although larger-scale longitudinal research is needed, findings of this study suggest that screening efforts to identify youth at risk of marijuana initiation might rely on more cost-effective self-report assessment of inhibitory control, but further valuable information can come from more resource-intensive but sensitive performance-based assessment of flexible shifting.

School, family, and peer predictors of adolescent alcohol and marijuana use

This study aimed to determine the contribution of family, school, and peer characteristics in alcohol and marijuana use. Since it is focused on adolescent relationships with their environment, the Primary Socialisation Theory was used as a theoretical background. A total of 6788 adolescents from different secondary school programmes participated in the research. The CTC questionnaire for children and youth, the School Attachment Scale and the Commitment Scale, and the Adapted Resilience and Youth Development Module were used. Besides calculating the descriptive parameters, the univariate and multivariate logistic regression were used. The results indicate an increasing number of alcohol and marijuana use among male at higher school classes. Caring family relations have shown to be a strong protective factor for alcohol and marijuana use. In a school context, a low commitment to school tasks, skipping school, and low school success are predictors of alcohol and marijuana use. Caring peer relationships have also shown to be predictors of drinking and marijuana use, while the probability for consumption got lower among adolescents reporting about hanging out with peers who hold high expectations. Presented results are emphasizing the importance of investing in quality of adolescent relationships with their environment, and making a strong case for preventive investments.

The Influence of Descriptive and Injunctive Norms on U.S. Adolescent Marijuana Use: A Systematic Review of the Literature

Prior research among adolescents has identified injunctive and descriptive norms as predictors of marijuana use. Yet, there is no consensus on which norm (i.e., injunctive or descriptive) or referent group (e.g., parents, peers, closest friend) is most consistently related to adolescent marijuana use. The objective of this review is to synthesize literature on perceived social norms and adolescent marijuana use and to identify the referents most commonly studied in relation to adolescent marijuana use. A systematic review, following PRISMA guidelines, assessed studies published from 1998 to 2018 that reported the impact of adolescents' perceived injunctive norms and descriptive norms on self-reported marijuana use. Seventeen peer-reviewed English-language studies met inclusion criteria. Across cross-sectional and longitudinal studies, injunctive norms and descriptive norms significantly predicted adolescent marijuana use. Peer norms were the most commonly measured descriptive norm and were found to be most positively related to marijuana use. Parental norms were the most measured injunctive norm and were also positively related to use. Injunctive norms and descriptive norms are key factors in considering adolescent marijuana use, although peer descriptive norms may be most influential. The lack of systematic definition and measurement of marijuana use, norms, and referents was apparent in the literature. Future research should systemize norm constructs and explore differences in the norm-marijuana use relationship among adolescents with intersecting identities (e.g., gender, race) and social network referents (e.g., family, peer groups).

190. What do You Consider Marijuana Use? Limitations of Current Surveillance Systems to Monitor Adolescent Marijuana Use

Adolescent health surveillance systems are critical for understanding patterns of marijuana use and generating data to evaluate changes in use following marijuana legalization and during the COVID-19 pandemic. The wording of survey questions may be misaligned with adolescents’ language about marijuana use and the ways they consume it. Our objectives were to compare terminology and prevalence of marijuana use between data from a local surveillance system and from a participatory research study.

Are Drinking Cognitions Associated with Marijuana and Concurrent Alcohol and Marijuana Use among Adolescents and Young Adults?

Concurrent use of alcohol and marijuana (i.e., CAM use) is the most common poly-drug use pattern among adolescents and young adults and is associated with negative outcomes. Research indicates that Prototype Willingness Model (PWM) drinking cognitions are associated with alcohol use. This secondary analysis was conducted to explore cross-sectional associations between PWM drinking cognitions, alcohol, marijuana, and CAM use. Adolescents and young adults between 15-25 years (N = 124, M age = 18.7) completed a baseline assessment as part of a larger study, including questions on alcohol and marijuana use, and PWM drinking cognitions. In the social reaction pathway, descriptive norms, perceived vulnerability, and prototype favorability, but not willingness were associated with greater alcohol use, whereas in the reasoned pathway attitudes and intentions were associated with frequency of drinking whereas injunctive norms were not. Both willingness and intention to drink were related to marijuana and CAM use when controlling for alcohol use frequency. Greater willingness to drink was the only significant predictor of marijuana use, and only descriptive norms predicted CAM use. However, of the cognitions within the reasoned pathway, greater attitudes toward drinking and drinking intention were related to greater marijuana and CAM use. Results also indicated that CAM users displayed higher levels of certain risk cognitions than non-users or single substance users. Findings support and extend the utility of the PWM by indicating that specific alcohol cognitions are associated with alcohol, marijuana, and CAM use in adolescents and young adults.

“Every Sinner Has a Future”: Religiosity, Future Orientation, Self-Control, and Marijuana Use

Based on previous research, I hypothesize that religious adolescents living in the United States are more likely to have a future orientation (i.e., they are more likely to think about the future), which in turn contributes to their greater self-control. I also hypothesize that a future orientation and self-control mediate the effect of religious service attendance and importance of religion on adolescent marijuana use. Based on the second wave of the National Study of Youth and Religion (NSYR), I find partial support for these hypotheses. Adolescents who believe that religion is important are more likely to think about the future, and adolescents who attend religious services frequently are less likely to use marijuana. Contrary to expectations, however, adolescents who think more about the future have lower self-control and thinking about the future and self-control do not explain the relationship between religious service attendance and marijuana use. The results also suggest that adolescents who identify as spiritual but not religious have lower self-control, and use marijuana more frequently compared to adolescents who do not identify as spiritual but not religious.

Recreational Marijuana Use, Adolescent Cognitive Development, and Schizophrenia Susceptibility

BackgroundWe investigated how low marijuana (MJ) use levels, the typical use pattern in most adolescent users, affect cognitive maturation and schizophrenia risk. MethodsIn two complementary adolescent samples where the majority reported minimal MJ use, we compared cognitive performances before and after MJ use initiation. The Iowa sample (40 first-degree relatives and 54 second-degree relatives of patients with schizophrenia and 117 control subjects with no schizophrenia family history) underwent a battery of standardized neuropsychological tests at 0, 18, and 36 months. Based on self-administered Timeline Followback interviews, 26.5% of adolescents had emergent MJ use (eMJ) during follow-up. The second sample (n = 3463), derived from a birth cohort, received substance use and sustained attention assessments between ages 10 and 15 years. Mixed linear models and regression analyses tested the effects of eMJ on longitudinal changes in cognitive performance. ResultsIn the Iowa sample, longitudinal changes in 5 of 8 cognitive domains were significantly associated with eMJ. On sustained attention, visuospatial working memory, and executive sequencing, adolescents with eMJ showed less age-expected improved performance. In addition, first-degree relatives with eMJ were less improved on processing speed and executive reasoning than first-degree relatives without eMJ. In the birth cohort, greater intraindividual variability in reaction times (indicative of poorer sustained attention) was significantly associated with more frequent MJ use and with recreational use levels. ConclusionsNonheavy MJ use disrupts normal adolescent maturation and compounds aberrant adolescent maturation associated with familial schizophrenia risk. These findings underscore the importance of reducing adolescent MJ access in the context of increased availability to high-potency MJ.