Mental Illness and Substance Use Disorder Stigma: Mapping Pathways Between Structures and Individuals to Accelerate Research and Intervention

Researchers, interventionists, and clinicians are increasingly recognizing the importance of structural stigma in elevating the risk of mental illnesses (MIs) and substance use disorders (SUDs) and in undermining MI/SUD treatment and recovery. Yet, the pathways through which structural stigma influences MI/SUD-related outcomes remain unclear. In this review, we aim to address this gap by summarizing scholarship on structural MI/SUD stigma and identifying pathways whereby structural stigma affects MI/SUD-related outcomes. We introduce a conceptual framework that describes how structural-level stigma mechanisms influence the MI/SUD treatment cascade via ( a ) interpersonal- and individual-level stigma mechanisms and ( b ) mediating processes among people with MI/SUD (i.e., access to resources, psychological responses, behavioral responses, social isolation). We consider intersections between MI/SUD stigma and stigma based on race/ethnicity, gender identity, and sexual orientation. Finally, we discuss the implications of this review for future research, interventions, and clinical practice.