AvoCog - the Effect of Daily Avocado Intake on Cognitive Function in Older Adults

Inclusion Criteria: * Males and females aged 65-85 years * Good general health with no concomitant disease * BMI 18.5 - 35 kg/m2 * Mini Mental State Exam ≥26 * Reports consuming ≤2 medium avocados per month * Reports consuming ≤3 servings of carotenoid-rich foods per week and ≤3 servings of fruits and vegetables per day * Skin carotenoid content \<400 Exclusion Criteria: * Unwilling or unable to consume avocado * Latex allergy * Consistently taking lutein + zeaxanthin supplements * Skin carotenoid content ≥400 * Central neurological disease such as Alzheimer's disease, Parkinson's disease, multiple sclerosis, stroke, brain tumor, etc. * Serious medical risk: cancer requiring chemotherapy or radiation within the past 5 years, recent cardiac event (i.e. heart attack, etc.) * Diabetes mellitus or uncontrolled hypertension * Use of psychoactive or investigational medications * Consumption of ≥3 alcoholic drinks per day or substance abuse * Unable to undergo MRI