Fig. 3

Brain volume differences in 3,627 older adults living with frailty stratified by body mass index (BMI). The color intensity on the heatmap indicates the magnitude of the p value, i.e., the level of statistical significance. Significant differences in volume were apparent between the older adults living with frailty in the low and high BMI groups and those in the intermediate BMI group. BMI body mass index, H high, L lower, N normal, vs. versus.