187Racial discrimination, life stress and allostatic load in Aboriginal and Torres Strait Islander adults
Abstract Background Increased allostatic load is linked with racial discrimination exposure, providing a mechanism for the biological embedding of racism as a psychosocial stressor. We undertook an examination of how racial discrimination interacts with socioecological, environmental and health cond...
| Published in: | International Journal of Epidemiology |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Oxford University Press (OUP)
2021
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1093/ije/dyab168.115 http://academic.oup.com/ije/article-pdf/50/Supplement_1/dyab168.115/40211685/dyab168.115.pdf |
| Summary: | Abstract Background Increased allostatic load is linked with racial discrimination exposure, providing a mechanism for the biological embedding of racism as a psychosocial stressor. We undertook an examination of how racial discrimination interacts with socioecological, environmental and health conditions to affect multisystem dysregulation in a First Nations population. Methods We conducted latent class analysis (LCA) using indicators of life stress, socioeconomic background and physical and mental health from a nationally representative sample of Australian Aboriginal adults (N = 2 056). We used LCA with distal outcomes to estimate the effect of the latent class variable on our derived allostatic load index and conducted a stratified analysis to test whether allostatic load varied based on exposure to racial discrimination across latent classes. Results Our socioecological, environmental and health measures informed a four-class structure; ‘Low risk’ (30.8%), ‘Challenged but healthy’ (27.8%), ‘Mental health risk’ (24.0%) and ‘Multiple challenges’ (17.4%). Mean allostatic load was highest in ‘Multiple challenges’ compared to all other classes, both in those exposed (4.5; 95% CI: 3.9, 5.0) and not exposed (3.9; 95% CI: 3.7, 4.2) to racial discrimination. Allostatic load was significantly higher for those with exposure to racial discrimination in the ‘Multiple challenges’ class (t = 1.74, p=.04) and significantly lower in the ‘Mental health risk’ class (t=-1.67, p=.05). Conclusions Racial discrimination may not always modify physiological vulnerability to disease. Social and economic contexts must be considered when addressing the impact of racism, with a focus on individuals and sub-populations experiencing co-occurring life challenges. Key messages Racial discrimination can increase physiological dysregulation in Aboriginal and Torres Strait Islander adults with a profile of psychosocial stress and adverse health. |
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