Fig. 6

Group comparison of MOCA, MMSE, Cortical thickness, and Hippocampal volu ure 6: Longitudinal trends in key Alzheimer’s biomarkers (Amyloid Beta, Tau, and Neurofilament Light Chain) over 5 years stratified by adherence to the MIND and Mediterranean diets. Participants with higher dietary adherence showed significantly slower biomarker elevation, consistent with reduced neurodegeneration.