To the Editor I read with interest the article by Kaup and colleagues,1 which concluded that the literacy levels of ninth grade or higher and college graduate education were significant predictors of cognitive resilience in both white and black apolipoprotein E (APOE) ε4 carriers in an 11-year follow-up study. Except age, there was no remarkable racial/ethnic difference on cognitive resilience. Regarding diabetes mellitus, the authors could not elucidate it as a significant predictor of cognitive resilience.
Kawada T. Diabetes Mellitus and Cognitive Resilience. JAMA Neurol. 2015;72(8):949. doi:10.1001/jamaneurol.2015.1316