APOE ε4 non-carriers with a higher adherence to the healthy dietary pattern had a reduced risk of dementia in model 1 (HR 0.79; 95% CI 0.65–0.95) and in the fully adjusted model 2 (HR 0.77; 95% CI 0.61–0.98), but no such associations were found among APOE ε4 carriers (Table 6). Here, APOE is linked to dementia.