The Dukan diet was designed by Dr. Pierre Dukan, a nutritionist and eating behavior specialist having 35 years of experience in clinical nutrition. The Dukan diet is very similar to the system of HyperProtein.
The diet included low amounts of high-fat dairy products, red meat, organ meat, and butter. Foods in this diet that appeared to fight Alzheimer's disease were salad dressing, nuts, fish, poultry, tomatoes, fruits, and cruciferous and dark and green vegetables. Researchers say the combination of nutrients and foods in this particular dietary pattern may fight Alzheimer's in a variety of ways.
There is also evidence linking B12 deficiency to Alzheimerâs Disease, which is the most common cause of dementia in Western countries (4, 5). The only good food sources of B12 are animal foods like meat, fish and eggs. A deficiency is widespread among vegans and vegetarians, who avoid these foods. In one study, 92% of vegans and 47% of lacto-ovo vegetarians were deficient in this critical brain nutrient (6).