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A new study highlights advantages of the Mediterranean diet in reducing risk of Alzheimer's.

The findings are especially significant for individuals of highest genetic risk.

The diet is largely plant-based, with lots of fruits, vegetables, whole grains, nuts and beans.

The food that people choose could have a powerful impact on the risk of developing dementia.

That’s according to a new study that found following a Mediterranean diet reduces the risk of Alzheimer’s — and it has the greatest impact for those with the highest genetic risk, people who carry two copies of the APOE4 gene.

The study was led by researchers from Mass General Brigham , Harvard T.H. Chan School of Public Health and the Broad Institute of MIT and Harvard. It was published in Nature Medicine .

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