The award-winning Mediterranean diet helps prevent dementia, especially in people at highest genetic risk, according to a new study.

A study published in the journal Nature on Monday found a Mediterranean diet with plant-based foods and healthy fats lowered the risk of dementia by at least 35 percent in people with two copies of the APOE4 gene. The APOE4 gene is a major risk factor for Alzheimer’s, the most common disease that causes dementia.

A new study claims a low-calorie version of the Mediterranean diet combined with exercise can reduce type 2 diabetes risk by 31% over a typical MedDiet.