Associations of history of mental illness with smoking and vaping among university students aged 18-24 years in New Zealand: Results of a 2018 national cross-sectional survey

Patterns of Alcohol, Cannabis, and E-Cigarette Use/Co-Use and Mental Health Among U.S. College Students

Substance use and mental health are highly correlated, though few studies assess the risk for depression and anxiety associated with dual and polysubstance use among college students. The purpose of this study was to characterize the relationship between alcohol, cannabis, and e-cigarette exclusive, dual, and polysubstance use and depression and anxiety among U.S. college students by racial and ethnic subgroup and stratified by sex.

Data from 83,467 undergraduate students participating in the 2020-2021 Health Minds Survey, a multi-campus, web-based survey, were used. Sex-stratified logistic regression models examined the effects of exclusive (past 30-day cannabis use, past 30-day e-cigarette use, past 2-week heavy alcohol use), dual (two among cannabis, e-cigarette, or alcohol use), and polysubstance (all three substances) use on anxiety (≥10 GAD-7 score) and depression (≥15 PHQ-9 score).

The study included 60,746 females and 22,721 males. Among females, compared to those who exclusively used alcohol, dual users of cannabis and e-cigarette had the largest odds for depression (adjusted odds ratio (aOR) = 1.92) and anxiety (aOR = 1.69) followed by polysubstance users (aORs = 1.85 and 1.53, respectively). Among males, compared to those who exclusively used alcohol, dual users of cannabis and e-cigarette had the largest odds for depression (aOR = 2.72) and anxiety (aOR = 2.23) followed by polysubstance users (aOR = 1.71 and 1.85, respectively). African American female and male students had lower odds of anxiety and depression compared to White students.

The results suggest that single, dual, and polysubstance use are associated with anxiety and depression among U.S. college students, though not necessarily in additive ways.

Passive exposure to e-cigarette emissions is associated with worsened mental health

BACKGROUND

Cigarette smoking, secondhand cigarette smoke (SHS) exposure, and e-cigarette use ("vaping") are each associated with increased rates of depressive symptoms and other internalizing mental health disorders. The prevalence of vaping has increased greatly, yet the mental health correlates of secondhand exposure to e-cigarette emissions are as yet to be investigated. This study examined the potential adverse mental health outcomes associated with different tobacco exposures (direct and passive), with a particular focus on the mental health correlates of secondhand exposure to e-cigarette emissions.

METHODS

The Population Assessment of Tobacco and Health Study data collected from a sample of 16,173 Wave 4 adults were used to test the hypothesis that secondhand e-cigarette emissions exposure is associated with increased odds of internalizing mental health disorders. Individuals were categorized as exclusive cigarette smokers, exclusive e-cigarette users, cigarette and e-cigarette dual users, exclusive noncombustible tobacco users, secondhand smoke exposed non-users, secondhand e-cigarette emissions exposed non-users, and non-users with no current SHS/secondhand e-cigarette aerosol exposure. Adjusted weighted logistic regression analysis was used to investigate the association between exposure type and internalizing problems as assessed by scores on the Global Appraisal of Individual Needs-Short Screener (GAIN-SS), a widely used instrument for assessing mental health problems.

RESULTS

Cigarette smokers (AOR = 2.53, 95% CI: 2.19-2.92), e-cigarette users (AOR = 3.14, 2.41-4.09), dual users (AOR = 3.37, 2.85-4.00), noncombustible tobacco users (AOR = 1.48, 1.01-2.17), SHS exposed non-users (AOR = 1.63, 1.37-1.94), and secondhand e-cigarette emissions exposed non-users (AOR = 1.43, 1.03-1.99) were each associated with increased odds of moderate to severe internalizing mental health problems as compared to unexposed non-users. Odds of internalizing problems among SHS and secondhand e-cigarette emissions exposed non-users did not differ (p = 0.46).

CONCLUSIONS

This is the first study, to our knowledge, to identify an association between recent secondhand exposure to e-cigarette emissions and mental health problems, and the risk is comparable to that of SHS. Corroboration of this relationship needs further research to explicate directionality and mechanisms underlying this association.

Access to Mental Health and Substance Use Resources for 2SLGBTQ+ Youth during the COVID-19 Pandemic

Previous research has established that gender and sexual minority (2SLGBTQ+) youth experience worse mental health and substance use outcomes than their heterosexual and cisgender counterparts. Research suggests that mental health and substance use concerns have been exacerbated by the COVID-19 pandemic. The current study used self-reported online survey responses from 1404 Canadian 2SLGBTQ+ youth which included, but were not limited to, questions regarding previous mental health experiences, diagnoses, and substance use. Additional questions assessed whether participants had expressed a need for mental health and/or substance use resources since the beginning of the COVID-19 pandemic (March 2020) and whether they had experienced barriers when accessing this care. Bivariate and multinomial logistic regression analyses were conducted to determine associations between variables and expressing a need for resources as well as experiencing barriers to accessing these resources. Bivariate analyses revealed multiple sociodemographic, mental health, and substance use variables significantly associated with both expressing a need for and experiencing barriers to care. Multinomial regression analysis revealed gender identity, sexual orientation, ethnicity, and level of educational attainment to be significantly correlated with both cases. This study supports growing research on the mental health-related harms that have been experienced during the COVID-19 pandemic and could be used to inform tailored intervention plans for the 2SLGBTQ+ youth population.