New research has shown that a Mediterranean diet can reduce mental declines related to the aging brain.

A Mediterranean diet has been shown to be good for your heart, but a new study from Spain reveals that it may be beneficial for the brain, too. 

Specifically, consuming nuts and olive oil in addition to whole grains, fish, vegetables, and fruit could help with aging-related memory and thinking. 

The team tracked a large group of participants who averaged 67 years in age and were mentally healthy.

They were randomly assigned one of three diets: a Mediterranean diet with additional extra virgin olive oil; a Mediterranean diet with about 30 grams of mixed walnuts, hazelnuts, and almonds a day; with the t