Targets for intervention to prevent substance use in young people exposed to childhood adversity: A systematic review

Refining the Universal, School-Based OurFutures Mental Health Program to Be Trauma Informed, Gender and Sexuality Diversity Affirmative, and Adherent to Proportionate Universalism: Mixed Methods Participatory Design Process

BACKGROUND

Mental disorders are the leading cause of disease burden among youth. Effective prevention of mental disorders during adolescence is a critical public health strategy to reduce both individual and societal harms. Schools are an important setting for prevention; however, existing universal school-based mental health interventions have shown null, and occasionally iatrogenic, effects in preventing symptoms of common disorders, such as depression and anxiety.

OBJECTIVE

This study aims to report the adaptation process of an established, universal, school-based prevention program for depression and anxiety, OurFutures Mental Health. Using a 4-stage process; triangulating quantitative, qualitative, and evidence syntheses; and centering the voices of young people, the revised program is trauma-informed; lesbian, gay, bisexual, transgender, nonbinary, queer, questioning, and otherwise gender and sexuality diverse (LGBTQA+) affirmative; relevant to contemporary youth; and designed to tailor intervention dosage to those who need it most (proportionate universalism).

METHODS

Program adaptation occurred from April 2022 to July 2023 and involved 4 stages. Stage 1 comprised mixed methods analysis of student evaluation data (n=762; mean age 13.5, SD 0.62 y), collected immediately after delivering the OurFutures Mental Health program in a previous trial. Stage 2 consisted of 3 focus groups with high school students (n=39); regular meetings with a purpose-built, 8-member LGBTQA+ youth advisory committee; and 2 individual semistructured, in-depth interviews with LGBTQA+ young people via Zoom (Zoom Video Communications) or WhatsApp (Meta) text message. Stage 3 involved a clinical psychologist providing an in-depth review of all program materials with the view of enhancing readability, improving utility, and normalizing emotions while retaining key cognitive behavioral therapy elements. Finally, stage 4 involved fortnightly consultations among researchers and clinicians on the intervention adaptation, drawing on the latest evidence from existing literature in school-based prevention interventions, trauma-informed practice, and adolescent mental health.

RESULTS

Drawing on feedback from youth, clinical psychologists, and expert youth mental health researchers, sourced from stages 1 to 4, a series of adaptations were made to the storylines, characters, and delivery of therapeutic content contained in the weekly manualized program content, classroom activities, and weekly student and teacher lesson summaries.

CONCLUSIONS

The updated OurFutures Mental Health program is a trauma-informed, LBGTQA+ affirmative program aligned with the principles of proportionate universalism. The program adaptation responds to recent mixed findings on universal school-based mental health prevention programs, which include null, small beneficial, and small iatrogenic effects. The efficacy of the refined OurFutures Mental Health program is currently being tested through a cluster randomized controlled trial with up to 1400 students in 14 schools across Australia. It is hoped that the refined program will advance the current stalemate in universal school-based prevention of common mental disorders and ultimately improve the mental health and well-being of young people in schools.

Trauma's distinctive and combined effects on subsequent substance use, mental health, and neurocognitive functioning with the NCANDA sample

PURPOSE

Traumatic brain injury (TBI) and potentially traumatic events (PTEs) contribute to increased substance use, mental health issues, and cognitive impairments. However, there's not enough research on how TBI and PTEs combined impact mental heath, substance use, and neurocognition.

METHODS

This study leverages a subset of The National Consortium on Alcohol and Neurodevelopment in Adolescence (NCANDA) multi-site dataset with 551 adolescents to assess the combined and distinctive impacts of TBI, PTEs, and TBI+PTEs (prior to age 18) on substance use, mental health, and neurocognitive outcomes at age 18.

RESULTS

TBI, PTEs, and TBI+PTEs predicted greater lifetime substance use and past-year alcohol and cannabis use. PTEs predicted greater internalizing symptoms, while TBI+PTEs predicted greater externalizing symptoms. Varying effects on neurocognitive outcomes included PTEs influencing attention accuracy and TBI+PTEs predicting faster speed in emotion tasks. PTEs predicted greater accuracy in abstraction-related tasks. Associations with working memory were not detected.

CONCLUSION

This exploratory study contributes to the growing literature on the complex interplay between TBI, PTEs, and adolescent mental health, substance use, and neurocognition. The developmental implications of trauma via TBIs and/or PTEs during adolescence are considerable and worthy of further investigation.

Behavior problems, social relationships, and adolescents' future orientation. Links from middle to late adolescence

INTRODUCTION

As adolescents leave high school, plans for the future are of great importance. Future orientation reflects positive thoughts regarding further education, employment, and family life. While future orientation has been found to affect behavior problems, the influence of behavior problems on future orientation is mainly unknown. Positive parent-child and peer relations may boost positive outlooks, but the interplay of behavior problems and social relations for future orientation remains to be studied.

METHODS

Participants were 485 adolescents, 54% girls, living in Mid-Sweden. At age 15, parents and adolescents rated ADHD- and internalizing symptoms, parents rated ODD-symptoms, and adolescents rated their relationship with parents and peers. At age 18, adolescents rated future orientation regarding education, employment, and family, and reported on delinquent acts.

RESULTS

Low levels of inattention symptoms and of delinquency were important for all higher future orientation aspects. In contrast, higher levels of hyperactive-impulsive symptoms were associated with more positive outlooks on work and family life. Relationships with parents and peers were stronger predictors of future outlooks, compared with behavior problems. There were few interaction effects of behavioral symptoms and social relationship quality.

CONCLUSIONS

Behavior problems in middle adolescence may negatively affect future outlooks. However, positive social relations, especially relations with peers, seem more important for optimistic views than behavior problems and thus may have a compensatory effect. The clinical implications should be to address the young person's social world, in the case of misgivings about the future, also in the presence of problematic behaviors.

Prevalence and Correlates of Substance Use Among Youth Living with HIV in Fishing Communities in Uganda

Alcohol and drug use (ADU) poses a significant barrier to optimal HIV treatment outcomes for adolescents and youths living with HIV (AYLHIV). We aimed to investigate the prevalence and correlates of ADU among ALHIV in Ugandan fishing communities, areas characterized by high HIV and poverty rates. AYLHIV aged 18-24, who knew they were HIV-positive, were selected from six HIV clinics. Substance use was determined through self-report in the last 12 months and urine tests for illicit substances. Utilizing a socioecological framework, the study structured variables into a hierarchical logistic regression analysis to understand the multi-layered factors influencing ADU. Self-reported past 12 months substance use was 42%, and 18.5% of participants had a positive urine test for one or more substances, with alcohol, benzodiazepines, and marijuana being the most commonly used. With the addition of individual-level socio-demographics, indicators of mental health functioning, interpersonal relationships, and community factors, the logistic regression analysis revealed greater exposure to adverse childhood experiences increased the odds of substance use (Odds Ratio [OR] = 1.24; 95% Confidence Interval [CI]: 1.03-1.55). Additionally, exposure to alcohol advertisements at community events significantly raised the odds of substance use (OR = 3.55; 95% CI: 1.43-8.83). The results underscore the high prevalence among AYLHIV and emphasize the need for comprehensive interventions targeting individual (e.g., life skills education and mental health supports), interpersonal (e.g., peer support and family-based interventions), community (e.g., community engagement programs, restricted alcohol advertisements and illicit drug access), and policies (e.g., integrated care models and a national drug use strategy), to address ADU.

Sociocultural Risk and Resilience in the Context of Adverse Childhood Experiences

Importance

Knowledge about childhood resilience factors relevant in circumstances of marginalization and high numbers of adverse childhood experiences (ACEs) can improve interventions.

Objective

To identify sociocultural resilience factors in childhood that are associated with better young adult mental health in the context of ACEs.

Design, Setting, and Participants

This cohort study examined 4 waves of data from the Boricua Youth Study, which included Puerto Rican children from the South Bronx, New York, and San Juan, Puerto Rico. Participants were aged 5 to 17 years at waves 1 through 3 (2000-2003) and aged 15 to 29 years at wave 4 (2013-2017). Linear and logistic regression models tested the associations of 7 childhood resilience factors and their interaction with ACEs on young adult mental health outcomes. Data were analyzed from June 2021 to October 2023.

Main Outcomes and Measures

Perceived stress, major depressive disorder and/or generalized anxiety disorder (MDD/GAD), and substance use disorder (SUD) in young adulthood.

Results

Among a total 2004 participants, the mean (SD) age at wave 4 was 22.4 (2.9) years; 1024 participants (51.1%) were female, and 980 (48.9%) were male. Positive parent-child relationships and nonparental adult support during childhood were associated with both lower perceived stress (β = -0.14; SE = 0.02; P < .001; β = -0.08; SE = 0.03; P = .003, respectively) and lower odds of MDD/GAD (adjusted odds ratio [aOR], 0.84; 95% CI, 0.73 to 0.97; aOR = 0.81; 95% CI, 0.69 to 0.95, respectively) in young adulthood. Maternal warmth reported during childhood was also associated with lower young adult perceived stress (β = -0.11; SE = 0.02; P < .001). None of the resilience factors were associated with SUD. The resilience factors familism, friendships, and family religiosity were not associated with any of the mental health outcomes. ACEs were associated with poorer mental health outcomes; however, none of the resilience factors exhibited interactions consistent with being protective for ACEs. Unexpectedly, higher family religiosity was associated with more perceived stress in the presence of higher ACEs.

Conclusions and Relevance

The results of this study suggest that promoting positive relationships with adults during childhood may reduce later young adulthood stress and MDD/GAD. However, there is still a need to identify sociocultural childhood protective factors for ACEs. Caution should be taken in assuming what resilience factors are relevant for a given group, as higher family religiosity (one postulated resilience factor) was unexpectedly associated with a stronger, rather than a weaker, association between ACEs and perceived stress in young adulthood.

Neuroendocrine mechanisms in the links between early life stress, affect, and youth substance use: A conceptual model for the study of sex and gender differences

Early life stress (ELS) is defined as an acute or chronic stressor that negatively impacts a child's development. ELS is associated with substance use and mental health problems. This narrative literature review focuses on sex and gender differences in the effects of ELS on 1) adolescent neuroendocrine development; 2) pubertal brain maturation; and 3) development of internalizing symptoms and subsequent substance use. We posit that ELS may generate larger hormonal dysregulation in females than males during puberty, increasing internalizing symptoms and substance use. Future research should consider sex and gender differences in neuroendocrine developmental processes when studying the link between ELS and negative health outcomes.

Sex Differences in the Relationship Between Nucleus Accumbens Volume and Youth Tobacco or Marijuana Use Following Stressful Life Events

Background

Exposure to stressful life events (SLEs) can upset balance and affect the healthy brain development of children and youths. These events may influence substance use by altering brain reward systems, especially the nucleus accumbens (NAc), which plays a key role in motivated behaviors and reward processing. The interaction between sensitization to SLEs, depression, and substance use might vary between male and female youths, potentially due to differences in how each sex responds to SLEs.

Aims

This study aims to examine the effect of sex on the relationship between SLEs, Nucleus Accumbens activity, and substance use in a nationwide sample of young individuals.

Methods

We utilized data from the Adolescent Brain Cognitive Development study (ABCD), a longitudinal study of pre-adolescents aged 9-10 years, comprising 11,795 participants tracked over 36 months. Structured interviews measuring SLEs were conducted using the Kiddie Schedule for Affective Disorders and Schizophrenia (K-SADS). Initial linear regression analyses explored if SLEs could predict volumes of the right and left NAc. Subsequently, Cox regression models were used to investigate how SLEs and NAc volume might predict the initiation of tobacco and marijuana use, with the analysis stratified by sex to address potential sex differences.

Results

Our findings reveal that SLEs significantly predicted marijuana use in males but not in females, and tobacco use was influenced by SLEs in both sexes. A higher number of SLEs was linked with decreased left NAc volume in males, a trend not seen in females. The right NAc volume did not predict substance use in either sex. However, volumes of both the right and left NAc were significant predictors of future tobacco use, with varying relationships across sexes. In females, an inverse relationship was observed between both NAc volumes and the risk of tobacco use. In contrast, a positive correlation existed between the left NAc volume and tobacco and marijuana use in males, with no such relationship for females.

Conclusion

This study underscores that the associations between SLEs, NAc volume, and subsequent substance use are influenced by a nuanced interplay of sex, brain hemisphere, and substance type.

Experiencing violence and other predictors of within-person same-day use of multiple substances in youth: a longitudinal study in emergency settings

Background: Although experiencing violence is a risk factor for substance use among youth, its association with same-day use of multiple substances (a form of polysubstance use) and mitigating factors is less well understood.Objectives: To identify whether prosocial factors modified the effect of experiencing violence on the frequency of same-day use, and examine gender-specific risk/protective factors for same-day use.Methods: We analyzed longitudinal data from a cohort of youth who use drugs aged 14-24 (n = 599; 58% male) presenting to an urban emergency department between 2009-2011 and assessed biannually for two years. Using Poisson-generalized linear models with person-level fixed effects, we estimated within-person associations between self-reported experiencing violence and same-day use and analyzed gender and peer/parent support as effect modifiers. We adjusted for negative peer influence, parental drug and alcohol use, family conflict, anxiety and depression, and age.Results: Overall, positive parental support corresponded to lower rates of same-day use (rate ratio [RR]:0.93, 95% CI:0.87-0.99) and experiencing violence was associated with higher rates of same-day use (RR:1.25, 95% CI:1.10-1.41). Violence exposure was a risk factor among males (RR:1.42, 95% CI:1.21-1.66), while negative peer influences and parental substance use were risk factors among females (RR:1.63, 95% CI:1.36-1.97 and RR:1.58, 95% CI:1.35-1.83, respectively). Positive peer support reduced the association between violence exposure and same-day use among males (RR:0.69, 95% CI:0.57-0.84, p < .05).Conclusions: Tailored interventions may address gender differences in coping with experiencing violence - including interventions that promote parental support among males and reduce influence from parental substance use among females.

Interventions for prevention and treatment of substance use in youth with traumatic childhood experiences: a systematic review and synthesis of the literature

Most substance use begins in adolescence. Both childhood trauma and associated post-traumatic stress disorder (PTSD) increase risk for early substance use, which is associated with greater eventual severity of substance use disorders (SUDs). When co-occurring, PTSD and SUD can reinforce and exacerbate each other, necessitating integrated treatment approaches. To systematically review existing literature on interventions for prevention or treatment of SUDs among adolescents (aged 10-24) with a history of trauma, with or without PTSD, we searched databases (PubMed, PsycInfo, CINAHL, Cochrane CENTRAL) using search terms related to substance use, trauma, adolescents, and interventions. Searches identified 8134 unique articles, 68 of which prompted full-text screening. Authors extracted data, applied the Effective Public Health Practice Project Quality Assessment Tool to evaluate the evidence, and synthesized findings. Thirty three articles met eligibility criteria, including 13 RCTs. Twenty studies (10 RCTs) evaluated interventions for substance use and co-occurring problems among youth with a history of trauma, predominantly via individual therapy based on cognitive-behavioral principles, although group therapy, case management, and other approaches have also been studied. Interventions with exposure-based components were infrequent but had robust results and minimal adverse outcomes. Thirteen studies examined differential response of youth with a history of trauma to standard SUD treatments, compared to youth without a history of trauma, with mixed findings. Youth with a history of trauma face elevated risk of SUDs and may respond differently to SUD treatments. Several promising interventions have been recently developed.

Urban neighbourhood elements that influence psychoactive substance use among populations with adverse childhood experiences: a scoping review protocol

INTRODUCTION

Adverse childhood experiences (ACEs) are stressful or traumatic events experienced before the age of 18 years old. ACEs have been associated with an increased risk for substance use in adulthood. While an abundance of research has examined psychosocial factors that explain the link between ACEs and psychoactive substance use, little is known about the additional influence of the urban neighbourhood environment, including community-level factors, that influence the risk of substance use among populations with a history of ACEs.

METHODS AND ANALYSIS

The following databases will be systematically searched: PubMed, Embase, Web of Science, Cochrane, PsycInfo, CINAHL, Clinicaltrials.gov and TRIP medical databases. After the title and abstract screening and full-text screening, we will also conduct a manual search of the reference sections of included articles and include relevant citations. Eligibility criteria include peer-reviewed articles that focus on populations with at least one ACE, factors from the urban neighbourhood community, such as elements from the built environment, presence of community service programmes, quality and vacancy of housing, neighbourhood level social cohesion, and neighbourhood level collective efficacy or crime. Included articles should also include terms such as 'substance abuse', 'prescription misuse' and 'dependence'. Only studies written or translated into the English language will be included.

ETHICS AND DISSEMINATION

This systematic and scoping review will focus on peer-reviewed publications and does not require ethics approval. Findings will be available for clinicians, researchers and community members via publications and social media. This protocol describes the rationale and methods for the first scoping review to inform future research and community-level intervention development that targets substance use among populations who have experienced ACEs.

PROSPERO REGISTRATION NUMBER

CRD42023405151.

An Umbrella Review of the Links Between Adverse Childhood Experiences and Substance Misuse: What, Why, and Where Do We Go from Here?

BACKGROUND AND OBJECTIVES

A wealth of research has identified adverse childhood experiences (ACEs; abuse, neglect, violence or disorder in the home) as a strong risk factor for substance misuse. Synthesis of the existing evidence is critical to shape policy and inform directions for future research. Existing reviews have focused on specific substances or substance use outcomes (eg, disorder), and do not include discussion of the mechanisms that operate between ACEs and substance misuse. The current umbrella review aims to synthesize reviews on the relationship between ACEs and substance misuse, review the evidence on the mechanisms linking these, identify existing gaps in our knowledge, and discuss critical directions for future research, practice, and public policy.

METHODS

Two electronic databases (PsycINFO and Medline) were searched for reviews published between 1998 and 2022 on the link between ACEs and substance misuse. Twenty articles met eligibility criteria and were qualitatively synthesized.

RESULTS

Results overwhelmingly demonstrated an elevated risk of substance misuse or disorder, among adolescents and adults exposed to ACEs. Research on the mechanisms that explain this link highlights a multitude of potential intervention targets, with childhood stress propelling a cascade of effects across neurobiological, endocrine, immune, metabolic, and nervous systems, impacting psychosocial and cognitive functioning. Nonetheless, the literature is subject to limitations surrounding potential unmeasured cofounders and causality, as well as decontextualizing childhood adversity from broader structural issues that influence the link between ACEs and substance misuse. Research, policy, and practice that seek to holistically understand and address the relationship between ACEs and substance misuse within the broader social determinants of health is crucial.

Clusters of Adversity Types Among U.S. Youth: Associations With Mental Health

INTRODUCTION

Childhood adversities are risk factors for subsequent mental health problems. Research commonly focuses on adverse childhood experiences, despite evidence that other exposures, such as neighborhood violence or peer victimization, co-occur with adverse childhood experiences and are associated with similar mental health outcomes. This study explored the clustering of these exposures and examined the associations with mental health.

METHODS

Data were a nationally representative sample of U.S. children aged 10-17 years (N=1,959), collected in 2013-2014. Latent class analysis was conducted on 22 types of childhood adversity. Regression models examined associations with mental health and substance use. These secondary analyses were conducted in 2021.

RESULTS

A total of 5 classes were identified: Low all (59% of the sample), Abuse (29%), High multiple adversities (5%), Peer adversity (4%), and Neighborhood violence (4%). All classes had poorer mental health and a higher prevalence of substance use than Low all, with particularly harmful levels in High multiple adversities. Neighborhood violence was not significantly different from High multiple adversities on mental health symptoms and showed a greater proportion of past-year substance use than all other classes except High multiple adversities. Peer adversity and Abuse classes did not differ significantly in any outcomes.

CONCLUSIONS

Findings highlight the particularly deleterious impact of neighborhood violence and highly co-occurring adversity types on mental health and substance use. It is important to extend our conceptualization of adverse childhood experiences to include peer adversity and neighborhood violence and shift from a siloed approach to examining all these exposures.

Social and Behavioral Pathways between Adverse Childhood Experiences and Poor Adult Physical Health: Mediation by Early Adulthood Experiences in a Low-Income Population

Adverse childhood experiences (ACEs) increase the risk of poor health and wellbeing in adulthood. In this study, we tested whether experiences in early adulthood-intimate partner violence (IPV), substance use, social isolation, and work instability-mediate the relationship between ACEs and poor physical health in later adulthood. Using data from a large-scale survey of Medicaid enrollees in the Portland metropolitan area, four separate mediation models were constructed to assess the indirect effects of each early adulthood experience and the proportion of the total effect on physical health accounted for by the pathway. Experiencing four or more ACEs increased the risk of poor adult physical health by 50% (RR 1.50). Considered in separate models, mediation by IPV accounted for 14.4% of the total effect; substance use mediated a similar proportion (14.0%). Social isolation was a less substantial mediator (7.6%). Work instability did not mediate the relationship between ACEs and adult physical health in our population. These findings provide evidence that IPV, substance use, and social isolation in early adulthood are part of the pathway between high ACEs and poor adult physical health. Intervening to prevent negative early adult experiences may mitigate some of the long-term effects of childhood trauma on health.

Adverse childhood experiences and past 30-day cannabis use among middle and high school students: The protective influence of families and schools

Exposure to adverse childhood experiences (ACEs) is a risk factor for adolescent cannabis use (CU). We explored whether family communication and school connectedness can offer direct protection (the compensatory model of resiliency) or moderating protection (the protective factors model of resiliency). Using cluster random sampling, a Youth Risk Behavior Survey (YRBS) was conducted with 5,341 middle school and 4,980 high school students in 2019. Generalized estimating equations were used to estimate whether family communication and school connectedness offered independent direct protection (multiple regression) or moderating protection (multiplicative interaction) in the relationship between ACEs and past 30-day CU. Adjusted prevalence ratios (APR) and 95% confidence intervals (95% CI) were calculated. There was a graded relationship between ACEs and past 30-day CU for all students that was particularly strong among middle school students: 1 ACE (APR = 2.37, 95% CI = 2.16, 2.62), 2 ACEs (APR = 2.89, 95% CI = 2.60, 3.23), 3 ACEs (APR = 5.30, 95% CI = 4.75, 5.90), 4 + ACEs (APR = 7.86, 95% CI = 7.13, 8.67). Results supported the compensatory model of resiliency with both family communication (middle school APR = 0.90, 95% CI = 0.88, 0.93; high school APR = 0.90, 95% CI = 0.87, 0.93) and school connectedness (middle school APR = 0.76, 95% CI = 0.72, 0.79; high school APR = 0.72, 95% CI = 0.68, 0.77) demonstrating a direct, independent protective relationship with past 30-day CU. There was no consistent evidence supporting the protective factors resiliency model.

Personality as a Possible Intervention Target to Prevent Traumatic Events in Adolescence

Traumatic events (severe injury, violence, threatened death) are commonly experienced by children. Such events are associated with a dose-response increasing risk of subsequent substance use, mental illness, chronic disease, and premature mortality. Preventing the accumulation of traumatic events is thus an urgent public health priority. Substance use risk personality profiles (impulsivity, sensation seeking, hopelessness, and anxiety sensitivity) may be an important target for preventing trauma exposure, given associations between these personality traits and risky behaviour, substance misuse, and injuries across adolescence. The current study aimed to investigate associations between personality at age 13 and the number of traumatic events experienced by age 18. It also examined associations between traumas before age 13 and personality at age 13. Participants were the control group of a cluster-randomised controlled trial examining prevention of adolescent alcohol misuse. Baseline data were collected at ages 12–13 (2012). Participants were followed-up at ages 18–19 (2017–2018). Personality profiles of hopelessness, anxiety sensitivity, impulsivity, and sensation seeking were measured at baseline using the Substance Use Risk Profile Scale. Traumatic events and age of exposure were measured at age 18–19 using the Life Events Checklist for DSM-5. Mixed-effect regression was conducted on 287 participants in Stata 17, controlling for sex. High scores on hopelessness, impulsivity, and sensation seeking at age 13 were associated with a greater number of traumatic events by age 18. Impulsivity and sensation seeking predicted the number of new traumatic events from age 13 to 18. Prior trauma exposure was associated with high hopelessness at age 13. Adolescents exhibiting high impulsivity or sensation seeking may be at greater risk of experiencing traumatic events. Additionally, early trauma exposure may contribute to the development of a hopelessness personality trait.

"I Grew Up Amidst Alcohol and Drugs:" a Qualitative Study on the Lived Experiences of Parental Substance Use Among Adults Who Developed Substance Use Disorders Themselves

Experiencing parental substance use (PSU) has been associated with a heightened risk of developing substance use disorders (SUDs) in offspring. The primary goal of this study was to explore perspectives of adult children with lived experience of PSU who also developed SUDs themselves through first-hand experience. This study was conducted in Flanders (Belgium). A qualitative exploratory research design was applied. Seventeen semi-structured interviews were conducted with adult children of parents with SUDs (range: 29-48 years) who themselves had developed SUDs. All interviews were audio-taped and transcribed verbatim. Three overarching themes emerged through thematic analysis: 1) loneliness and neglect in childhood; 2) stigma and the self; and 3) the role of social connection in substance use and recovery. The narratives highlighted the central role of feelings of loneliness, isolation and belonging among children of parents with SUDs in childhood and adulthood. Increasing public awareness on the impact of PSU on children and accessible support is needed to overcome stigma and remove barriers to social inclusion for children of parents with SUDs. Findings may prove valuable in informing policy, program and treatment development aimed at breaking maladaptive intergenerational cycles.