Research
Mixed
Adherence to the Mediterranean diet (MeDi) is associated with improved cognitive performance and a delay in cognitive decline in elderly populations, particularly when enriched with extra virgin olive oil or nuts.
Adopt a Mediterranean-style eating pattern focusing on extra virgin olive oil, vegetables, fruits, whole grains, and nuts. This approach is more effective for cognitive health than taking single supplements. Prioritize high-polyphenol olive oil and moderate wine intake if appropriate for your health profile.
GoodSupportsHIGH confidence
A longitudinal investigation conducted by CINTA found that among local elderly cohorts in the U.S., France, Spain, and Greece, adherence to the Mediterranean diet, particularly when enhanced with olive oil or nuts, was associated with improved cognitive performance (23).
Why this rating
Supported by multiple longitudinal studies and RCTs mentioned in the review, though the paper itself is a review.
Source
The intricate interplay between dietary habits and cognitive function: insights from the gut-brain axis
Ruyi Zhang et al. · Frontiers in Nutrition · 2025
narrative_reviewCited 21×
Read the paper This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →