Subjects who adhered most closely to a diet including more olive oil-based salad dressing, nuts, fish, tomatoes, poultry, cruciferous vegetables such as broccoli, fruits, and dark and green leafy vegetables and ate less red meat, organ meat or high-fat dairy products had about a 40 percent lower risk of developing Alzheimer???s. (???Mediterranean Diet and Risk for Alzheimer???s Disease, by Nikolao