Socioeconomic status, individual behaviors and risk for Lymphomas: a Mendelian randomization study

Background : The association of socioeconomic status and individual behavior (SES/IB) with human health is receiving increasing attention. However, the causal effects between SES/IB and lymphomas remain unclear. Methods: A two-sample Mendelian randomization (MR) study was used to assess the causal effects of 25 SES/IB traits (dietary habits, physical activity, smoking/drinking behaviors, sleeping behaviors, leisure sedentary behaviors, risky behaviors, and reproductive behaviors) on six distinct types of lymphomas, including Hodgkin lymphoma (HL), follicular lymphoma (FL), diffuse large B-cell lymphoma (DLBCL), mature T/NK-cell lymphomas, marginal zone B-cell lymphoma (MZL), and mantle cell lymphoma (MCL). The inverse variance weighted (IVW) method was the primary approach used for the MR analysis. A series of sensitivity analyses were also conducted to ensure the robustness of the findings. Results : Two-sample MR revealed six SES/IB traits causally associated with lymphomas, including relative fat intake, drive time, television watching time, computer use time, vigorous physical activity, and number of children ever born. After false discovery rate (FDR) correction, the causal associations between longer television watching time and DLBCL ( OR : 4.048, 95% CI: 1.688 to 9.708, P fdr =0.009), and the number of children ever born with both FL ( OR : 0.008, 95% CI: 1.412E-04 to 0.484, P fdr =0.021) and DLBCL ( OR : 0.001, 95% CI:1.587E-05 to 0.081, P fdr =0.002) were identified. Conclusions : These findings suggest that certain lifestyle and behavioral factors have a measurable impact on specific lymphoma types.