AARP.org offers these brain-healthy nutritional suggestions:

• Vegetables -- Eat as many as you can, of all different colors, shapes and varieties.
• Antioxidants -- Found in vitamins C, E and beta carotene, you should get plenty of these substances. They occur naturally in many fruits and vegetables.
• Omega-3 fatty acids -- They are found in fatty fish such as mackerel, herring, sardines, anchovies, whitefish, tuna and sablefish.
• A B vitamin -- Take one daily.
• A multivitamin -- Also take one daily, but never exceed recommended dose. Taking more vitamins doesn't make it healthier -- doing so could be dangerous.