IntroductionThis study investigated the mechanisms underlying mental health risks among lesbian/gay (LG) and bisexual university students in China, focusing on the roles of sexual identity centrality, identity uncertainty, and interpersonal discrimination in depressive symptoms.MethodsA cross-sectional survey was conducted with 363 university students (142 LG students and 221 bisexual). Group differences were examined, and structural equation modeling was used to test the direct and indirect ass