ArticlePsoriasis (Auckland, N.Z.)2025
Causal Effect of Plasma Fatty Acid Profiles on Psoriasis Risk: Genetic Evidence from a Mendelian Randomization Study.
Article in Psoriasis (Auckland, N.Z.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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4 authors.
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Abstract
Introduction: Emerging evidence indicates that omega-3 fatty acids from fish oil may serve as beneficial dietary supplements for psoriasis management. Clinical observations demonstrate a significant association between psoriasis improvement and increased docosahexaenoic acid (DHA) levels. However, the causal relationship between fatty acids and psoriasis risk requires further investigation. Methods: Using summary-level genome-wide association study (GWAS) data, we applied univariable (UVMR), reverse, and multivariable (MVMR) Mendelian randomization analyses to assess causal effects of multiple fatty acids-including polyunsaturated (PUFA), saturated (SFA), monounsaturated (MUFA), omega-3/6 fatty acids, DHA, eicosapentaenoate (EPA) and docosapentaenoate (DPA)-on psoriasis risk. Results: The analysis revealed that higher circulating levels of omega-3 fatty acids were significantly associated with a reduced risk of psoriasis development (UVMR: OR = 0.900, p = 0.022; MVMR: OR = 0.862, p = 0.007). Sensitivity analyses supported the robustness of this causal relationship, with consistent effects across multiple MR methods. Notably, DHA (UVMR: OR = 0.788, p = 0.006; MVMR: OR = 0.856, p = 0.021) drove this inverse association, while EPA and DPA showed marginal contributions. Conclusion: This study provides valuable insights for targeted nutritional strategies to prevent and manage psoriasis, but further validation is needed.
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