In cross-sectional and longitudinal studies, higher intake of fruit, vegetables, whole grains, oily fish, low-fat dairy, and relevant vitamin supplements (e.g., B12, folate, D) was associated with a reduction in AD biomarkers, such as Aβ40 and Aβ42, tau levels in the CSF, and chemical compounds used in PET imaging, while a diet consisting of high glycemic, high saturated fat foods was associated with an increase in the said biomarker burdens (Hill et al., 2019). Here, MAPT is linked to Alzheimer disease.