Key points from article :
Combination of Mediterranean diet and blood pressure-lowering DASH diet.
Brain-healthy foods include berries, green leafy vegetables, nuts, olive oil and even a bit of wine. Avoid red meats, butter, cheese, sweets and fried food.
Following this diet is equivalent to being 7.5 years younger mentally.
Results from 9 year study of 960 retired men and women including annual assessment of 5 areas of brain function.