Examining the role of problematic drug use in the relationship between discrimination and sleep disturbance in transgender and nonbinary individuals

Objective: Transgender and nonbinary (TGNB) individuals are a health disparity population at high risk for sleep disturbance (e.g., insomnia). Recent evidence suggests minority stress (e.g., discrimination) is associated with sleep disturbance in TGNB adults. However, investigators have yet to identify factors that might explain this relationship. In this study, we investigated the role of problematic drug use (PDU) in the relationship between discrimination and sleep disturbance in TGNB individuals.Methods: The study sample included 194 TGNB participants from Wave 5 (2021) of Project AFFIRM, a multi-site longitudinal study of transgender health. Discrimination, PDU, and sleep disturbance were measured using the Everyday Discrimination Scale, Drug Use Disorders Identification Test (DUDIT), and PROMIS Sleep Disturbance measures, respectively. Individuals were classified as having PDU using established DUDIT criteria that were applied based on sex assigned at birth. Regression analyses were used to estimate the associations of study variables, and subsequently, mediation analysis was used to determine whether PDU partially mediated the association between discrimination and sleep disturbance.Results: Nearly half of participants reported PDU, of which 83.2% reported cannabis use. Higher levels of discrimination were associated with worse self-reported sleep disturbance scores. Additionally, participants with greater discrimination were more likely to have PDU. Surprisingly, participants with PDU had lower sleep disturbance scores.Conclusions: Our cross-sectional findings suggest that PDU partially suppressed the association between discrimination and sleep disturbance in TGNB people. Efforts to address PDU in TGNB adults may consider assessing sleep disturbance as a motivating factor for drug use and the potential role of discrimination in perpetuating PDU.