Causal Effect of Fatty Fish Consumption on Influenza: Evidence From Two-Sample Mendelian Randomization

This study provides evidence for a potential causal relationship between increased fatty fish consumption and a decreased risk of influenza. These findings have implications for dietary recommendations and public health strategies aimed at reducing influenza burden. However, this study has some limitations, such as the potential influence of gene-environment interactions and the predominantly European-based study population, which may limit generalizability. Future research should aim to replicate these findings in diverse populations and further explore the biological mechanisms linking fatty fish intake with influenza susceptibility.