Increased plasma omega-3 levels, which are associated with genetically higher intake of omega-3, contribute to a higher risk of rheumatoid arthritis among people of European ancestry.
Cohort Study Omega-3 Fatty Acids Rheumatoid Arthritis
Methodology: The researchers have used an extensive set of data from the largest Genome-Wide Association Study (GWAS) which focuses on the correlation between omega-3 fatty acids and rheumatoid arthritis. They used information from a total of 114,999 individuals with European ancestry for the omega-3 study and 14,361 cases along with 43,923 controls of European ancestry for the rheumatoid arthritis study. By employing various methodological tests such as Mendelian randomization-egger_intercept, MR-PRESSO, and Cochran's Q test, they assessed the role of pleiotropy and heterogeneity in the relationship between omega-3 and rheumatoid arthritis.
Discussion of Results: Results reveal no significant bias, pleiotropy, or heterogeneity among the omega-3 genetic instrumental variables in rheumatoid arthritis datasets. However, as the Mendelian randomization analysis indicated a causal link, the study provides the inference that with the genetic increase of omega-3 levels, the risk of rheumatoid arthritis also increases, particularly among individuals of European descent. Therefore, it suggests that the reduction in the intake of omega-3 could potentially reduce the risk of rheumatoid arthritis in this population.
View Article
