Abstract Background Although sexual minorities are at greater risk of poor mental health, less is known about mental health among dual minority statuses individuals based on sexual orientation and migration status. The current study investigated disparities in mental health symptoms and psychiatric treatment for common mental disorders among Swedish-born and immigrant heterosexuals and sexual minorities. It further explored the role played by interpersonal and social stress in explaining these disparities. Methods Participants (n = 104,652) were drawn from the Swedish Public Health Survey in 2018. Six groups were compared based on sexual orientation (heterosexual, sexual minority) and migration status (Swedish-born, European-born, non-European). The survey was complemented with information on psychiatric treatment from nationwide registries. Odds ratios were calculated using logistic regression. Results Compared to Swedish-born heterosexuals, Swedish-born and non-European sexual minorities had the greatest risk of mental health symptoms (odds ratios [OR]=2.20, 95% confidence intervals [CI]: 1.89-2.57, and OR = 2.10, 95% CI 1.34-3.29, respectively). Swedish-born sexual minorities had greater risk of psychiatric treatment (OR = 2.58, 95% CI 2.20-3.01), while non-European heterosexuals had lower risk (OR = 0.61, 95% CI 0.52-0.72). No differences in psychiatric treatment was found for non-European sexual minorities (OR = 0.82, 95% CI 0.46-1.48). Interpersonal and social stress factors mediated the associations between migration status and mental health symptoms and psychiatric treatment differently depending on sexual orientation. Conclusions No excess risk of mental health symptoms was found among sexual minority immigrants compared to their Swedish-born counterparts. Key message • Non-European sexual minority immigrants’ risk of mental health symptoms was equally high to the risk among Swedish-born sexual minorities, but they received less psychiatric treatment.
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