A randomized, blinded trial in Spain has found that a Mediterranean diet supplemented with olive oil or mixed nuts may improve cognition compared with a low-fat diet. This study followed 522 adults at risk for vascular events for 6.5 years. Olive oil and nuts contain antioxidant properties that may protect against neurodegeneration caused by oxidative stress.
PositiveTip: A Mediterranean dietary pattern has many proven health advantages. Adding moderate amounts of olive oil or nuts might improve it further.