Background: Individuals with nonalcoholic fatty liver disease (NAFLD) share some common pathophysiological features with individuals with type 2 diabetes mellitus (T2DM). There is a well-established association between T2DM and cognitive decline, but no corollary data of people with NAFLD and without T2DM or whether combination of the 2 disorders is associated with additive deficits in cognitive performance.
Objectives: The purpose of this investigation is to compare measures of cognitive performance for individuals with NAFLD, individuals with T2DM, individuals with both or neither.
Methods: Using NHANES data from 2011-2014, 1102 individuals were identified who had completed cognitive assessments.
Results: After controlling for demographics, comorbidities, and metabolic components, individuals with both NAFLD and T2DM scored significantly lower on a task that combines processing speed, sustained attention, and working memory (Beta = -3.44, 95% CI: -6.75 to -0.12) than individuals with neither. Individuals with T2DM without NAFLD scored significantly lower on verbal fluency (Beta = -1.47, 95% CI: -2.7 to -0.23) than individuals with neither.
Conclusions: Data from this study suggests that individuals with T2DM and individuals with both NAFLD and T2DM have lower cognitive performance on various tasks. These data support an approach that aims to apply preventive strategies to optimize management of T2DM in patients with NAFLD.
Keywords: Cognitive performance; Diabetes; Insulin resistance; Memory; NAFLD; Nutrition surveys.
Copyright © 2018. Published by Elsevier Inc.