Greater brain age is associated with lower gray matter density in numerous regions - Regions showing significant association between gray matter density and brain age residual (regressed out sex, age (centered), and age (centered) squared), corrected for multiple comparisons, are shown. Colors indicate the t-value for the regression between gray matter density and brain age residual while adjusting for sex, age (centered), and age (centered) squared. Cooler colors indicate that lower gray matter density is associated with greater brain age (no regions in the opposite direction). Brains are plotted using BrainNet Viewer.