From Practice Update:
Both adhering to a Mediterranean diet and effectively managing type 2 diabetes may support optimal cognitive function. Healthy diets, in general, can help improve memory function among adults without type 2 diabetes.
Source: The Mediterranean Diet and 2-Year Change in Cognitive Function by Status of Type 2 Diabetes and Glycemic Control
Steve Parker, M.D.
PS: What else preserves brain function? The Mediterranean diet, for one.