In a large-scale prospective epidemiological study published on Journal of Nutrition a research team examined associations of long-term adherence to the Mediterranean Diet (adherence was based on intakes of: vegetables, legumes, fruits, nuts, whole grains, fish, red and processed meats, moderate alcohol, and the ratio of monounsaturated:saturated fat) and subsequent cognitive function and its decline.
The participants, 16,058 women from the Nurses’ Health Study, aged ≥70 y, underwent cognitive testing 4 times during 6 y.
The study showed that long-term Mediterranean Diet adherence was related to moderately better cognition but not with cognitive decline in this very large cohort of older women.
Samieri C., Okereke O.I., E. Devore E.E. and Grodstein F. Long-Term Adherence to the Mediterranean Diet Is Associated with Overall Cognitive Status, but Not Cognitive Decline, in Women. J Nutr 2013;143:493-9. doi:10.3945/jn.112.169896