Title : Adolescent substance use and substance use disorders: Neurodevelopmental vulnerability, risk factors, and evidence-based prevention and treatment
Abstract:
Adolescent substance use and substance use disorders (SUDs) remain a persistent public health concern with long-term implications for mental health, social functioning, and adult addiction risk. Adolescence represents a uniquely sensitive neurodevelopmental period characterized by ongoing maturation of prefrontal executive control systems alongside heightened responsivity of reward-processing neural circuits. This developmental imbalance contributes to increased risk-taking behavior, susceptibility to environmental influences, and vulnerability to substance exposure. Simultaneously, the heightened neuroplasticity during adolescence provides important opportunities for prevention, early intervention, and recovery. Despite advances in neuroscience, screening and interventions, gaps remain in translating evidence into coordinated, developmentally-appropriate prevention and treatment strategies. Comprehensive reviews integrating epidemiology, neurodevelopment, risk factors, prevention, and treatment are a decade old, predating major shifts in SUD patterns, including opioid overdose deaths, increased availability of high-potency cannabis products, and updated national treatment guidance. This updated, comprehensive narrative review uniquely integrates peer-reviewed literature across epidemiology, neurobiology, biopsychosocial risk and protective factors, prevention science, clinical psychology, and adolescent medicine to identify critical gaps, and inform future directions for research, policy, developmentally-informed screening, and evidence-based interventions. Emphasis was placed on systematic reviews, randomized controlled trials, longitudinal cohort studies, national public health reports, treatment guidelines and evidence-based prevention and treatment models relevant to adolescents. Recent evidence indicates that effective prevention requires coordinated, multilevel interventions targeting modifiable risk factors while strengthening protective factors across family, school, and community environments. Family-based prevention programs demonstrate the strongest and most durable outcomes, improving parental monitoring, communication, and adolescent coping skills. School-based social-emotional learning programs and community-wide prevention initiatives produce modest but meaningful reductions in SUD when implemented with fidelity and cultural relevance. Screening using validated adolescent-relevant tools enables early identification of risk behaviors and facilitates brief intervention strategies. Family centered approaches, behavioral therapies, and motivational interviewing approaches remain the cornerstone of adolescent SUD care, particularly because most pharmacologic treatments for SUD are not approved for individuals younger than 16 years of age. Integrated care models that address co-occurring mental health conditions demonstrate improved outcomes compared with fragmented treatment approaches. However, the evidence base remains limited by small sample sizes, short follow-up periods, underrepresentation of diverse populations, and ethical and regulatory constraints in adolescent clinical research. Emerging digital health interventions, including mobile health applications, telehealth, and online recovery supports, show promise for improving accessibility and engagement, although limited evidence and implementation challenges constrain widespread adoption. Adolescent SUD is best conceptualized within a developmental and chronic-care framework continuum involving cycles of remission, recurrence, and treatment reengagement. Leveraging adolescent neuroplasticity through early, family-centered, and developmentally informed interventions represents a critical opportunity for prevention and recovery. Future research should prioritize longitudinal studies in diverse adolescent populations, culturally responsive prevention models, improved screening technologies, scalable digital interventions, and understanding the neurobiological mechanisms underlying risk and resilience during adolescence. Coordinated collaboration across public health, education, clinical care, family, community and policy sectors will be essential to improving long-term outcomes and promoting resilience.
