Fig. 1From: Bidirectional two-sample mendelian randomization analysis identifies causal associations of MRI-based cortical thickness and surface area relation to NAFLDThe flowchart of the Mendelian Randomization (MR) study. Based on mendelian assumption 1, NAFLD, liver fat and liver volume are significantly related to genetic instrumental variables (IVs). Assumption 2 proposes that these IVs do not influence outcomes via confounding variables. Assumption 3 asserts that the genetic IVs do not directly impact the structure of cortex but exert influence only through indirect exposureBack to article page