Healthy midlife diet may prevent dementia later -- ScienceDaily

The researchers assessed the link between diet and dementia using a
healthy diet index based on the consumption of a variety of foods.
Vegetables, berries and fruits, fish and unsaturated fats from milk
products and spreads were some of the healthy components, whereas
sausages, eggs, sweets, sugary drinks, salty fish and saturated fats
from milk products and spreads were indicated as unhealthy.