APOE and Alzheimer disease: The significant interaction observed whereby adherence to the DASH diet at lower than the mean level was moderating the relationship between anxiety symptoms and Aβ burden specifically among APOE ɛ4 allele carriers, suggests that those at higher risk of AD due to carriage of the APOE ɛ4 allele, were also at greater risk for diet‐related Aβ deposition if they also had anxiety symptoms.