Here are 3 magic foods that help prevent dementia and Alzheimer's disease - chicken, fish, and nuts.

Researchers at the Columbia University Medical Center analyzed the diets of more than a thousand healthy seniors. They also measured the blood levels of a protein linked to Alzheimer's and other forms of dementia. The result? The people who ate the most chicken, fish, and nuts had the lowest levels of the dementia-causing protein.

So, what's so special about those 3 foods? They're all rich in Omega-3 fatty acids. And consuming one gram a day, or about what's found in 2 walnuts, reduced the levels of the bad protein by 30%. You can also get a healthy dose of omega-3s from flaxseed, berries, spinach, broccoli, and cauliflower. Bottom line: If you remember to eat your Omega-3s, you'll have an easier time remembering everything else.