A study from Columbia University in New York shows that those least likely to develop Alzheimer's disease eat a diet rich in omega-3 fatty acids, omega-6 fatty acids, vitamin E, vitamin B12 and folate, in foods such as nuts, fish, tomatoes, olive oil, poultry, broccoli and other cruciferous vegetables, fruits, and dark green leafy vegetables. They eat less red meat, organ meats and high-fat dairy products (Archives of Neurology, April 2010).
Alzheimer's disease is associated with an overactive immunity called inflammation. Your immunity is good for you because it prevents germs from invading your body. However if your immunity is overactive, it uses the same chemicals that it uses to destroy invading bacteria to punch holes in your arteries and damage your brain (Nature Medicine, August 2009). The foods recommended in the Columbia study reduce inflammation, while red meat and high fat dairy products may increase inflammation. Being overweight also increases risk for Alzheimer's disease because full fat cells release hormones that cause inflammation (Biochimica et Biophysica Acta, May 2009). More on Alzheimer's