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Sexual and gender minority adolescents (SGMA) experience disproportionate rates of depression, anxiety, and suicidality relative to cisgender and heterosexual peers. Minority stress theory posits that stigma-driven stressors explain these disparities, yet the pathways through which macro-level state legislation translates into individual psychiatric harm remain underexplored. With nearly 44% of SGMA living in restrictive or hostile policy environments, clarifying this mechanism is urgent. This study tested whether recent minority stress mediates the relationship between state LGBTQ+ policy climates and mental health and suicidality outcomes among SGMA, providing causally-grounded evidence for clinical practice and policy advocacy.
Methods
Data came from a harmonized, multi-cohort sample of 4,434 LGBTQ+ adolescents (ages 13–17; M=15.70 years, SD=1.14) drawn from three national studies (2018–2025) representing all 50 states and Washington, D.C. Participants were recruited via targeted social media advertisements and respondent-driven sampling. State LGBTQ+ policy environments were operationalized using Movement Advancement Project (MAP) equity scores (Negative/Low/Fair/Medium/High tiers). Recent minority stress was measured using the 54-item Sexual Minority Adolescent Stress Inventory (SMASI; α=0.89–0.91). Outcomes included standardized depressive symptoms (PHQ-9/CES-D), anxiety symptoms (GAD-7), and suicidality (ideation, planning, and attempts). Total associations were estimated via OLS and logistic regression. Formal causal mediation analyses using a counterfactual potential outcomes framework estimated natural indirect effects (NIE) and natural direct effects (NDE) of state policy on mental health through minority stress. Cluster-robust standard errors and Benjamini-Hochberg false discovery rate (FDR) correction were applied.
Results
Adolescents in Negative (b=1.65, p<.001) and Low (b=2.02, p<.001) policy states reported significantly greater recent minority stress than those in High policy states, confirming a significant dose-response relationship (F=8.59, p=.003). Robust NIEs emerged across all five outcomes. Residing in Negative (vs. High) policy states indirectly increased depression by 0.071 SDs (p<.001), anxiety by 0.46 GAD-7 points (p<.001), and absolute probabilities of suicidal ideation, planning, and attempts by 2.2%, 2.2%, and 1.4% (all p≤.01), exclusively through elevated minority stress. Living in Low policy states generated similarly significant indirect risks: depression +0.090 SDs, anxiety +0.55 points, and suicidal ideation, plan, and attempt probabilities of +2.9%, +2.6%, and +1.7% (all p<.001). Natural direct effects were largely non-significant. All NIEs survived FDR correction.
Conclusions and Implications
Hostile state legislation functions as a structural mechanism of harm, converting political hostility into acute psychiatric crises among SGMA, through heightened minority stress—establishing anti-LGBTQ+ legislation as a direct, measurable public health threat. These findings carry urgent implications for social work practice and policy: clinicians must recognize that SGMA from restrictive environments carry a structurally imposed stress burden requiring affirming, trauma-informed intervention. Policymakers should treat this causally-grounded evidence as justification for protective LGBTQ+ legislation. This research exposes inequitable laws as active threats to youth wellbeing and democratic equity. Future work should examine resilience factors—such as family acceptance, school-based gender-sexuality alliances, and peer community connectedness—as potential buffers of the policy-to-stress pathway.