Social inequity rooted in systemic oppression is robustly associated with mental and physical health; chronic stress is highlighted as a key mechanism. Growing evidence supports intersectionality theory, that interlocking systems of oppression (e.g., racism, sexism, heterosexism) may contribute to greater exposure to stressors for those with multiple marginalized identities. Limited research examining the association between sexual identity alone and C-reactive protein (CRP) – an upstream biological marker of chronic stress exposure – has yielded mixed results. The purpose of this project is to examine whether race/ethnicity, gender, and sexual identity interact to produce unequal levels of CRP.