I really like these Food Guide Pyramids from Mayo Health Clinic:
Increase fruits, vegetables, legumes, and cereals; have some fish and alcohol, and less dairy and meat. (I personally believe that nonfat dairy is healthy).
The Mediterranean diet may reduce risk for Alzheimer's disease, according to a community-based study conducted in New York.
The Mediterranean diet is known to be high in fruits, vegetables, cereals, but low in meat and dairy products. A group of 2,258 non-demented individuals from the Washington Heights-Inwood Columbia Aging Project participated in the study. They were instructed to be on the diet for an average of four years.
During the course of the study, 262 individuals were diagnosed with Alzheimer's disease.........
The Mediterranean diet has also been linked to a lower risk for cardiovascular disease, several forms of cancer, and overall mortality.