“Crystallized intelligence,” is the ability to use the skills and knowledge one has acquired over a lifetime. Serum lutein levels were correlated with brain concentrations of lutein in older adults and this was associated with increased gray matter volume.
Lutein is in most eye supplements…in most people the eyes are directly connected to the brain ;-)
“Macular degeneration and cataracts are largely driven by free radical damage, and may in many cases be largely preventable by eating foods rich in antioxidants, such as:
Also….saffron….
http://nutritionfacts.org/video/saffron-for-the-treatment-of-alzheimers/