Of the studies in question, Harvard noted that one of them: “published in 2015 and updated in 2018 compared healthy older adults who followed a Mediterranean diet with extra olive oil or extra nuts versus a control reduced-fat diet.

“The enhanced Mediterranean diet groups fared equally well, and both had better cognitive performance outcomes than the reduced-fat diet group.”

While the results of this study were promising, Harvard added a key caveat: “No study, however, had been able to determine the critical components of the Mediterranean diet that makes it so good for the brain.”

That is until recently.

Source: | This article first appeared on Express.co.uk

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