Aim for 13 ounces of fish a week, or, if you prefer supplements, take 2 grams of fish oil a day (metabolically distilled), or DHA from algae (where fish get their omega-3s), or an ounce of walnuts a day. DHA is the omega-3 that seems best for the brain.
Also load up on salad. The veggies, not the fat-laden dressing. It's been shown that vegetables—any kind, any place—slow cognitive decline even more than fruits. Eating two or more servings a day (just two!) decreases the decline in thinking by 35 percent over six years. Pass the sprouts, please.
Watch the video to find out what foods Dr. Oz recommends to keep your brain healthy.
Find out more about this book:You: Staying Young: The Owner's Manual for Extending Your Warranty