https://pubmed.ncbi.nlm.nih.gov/31996078/ A ketogenic diet may help you. Your brain uses glucose for fuel, but in dementia glucose metabolism in the brain is impaired. Luckily your brain and heart can also run on ketones, which bypass the limitation on glucose metabolism. If you try it, don't eat pre-packaged "keto" foods you find in the store. They are crap food and will hurt your progress. They lie about carb content by not counting sugar alcohol, but they do count. Real keto is making sure 70% of your calories are from animal fats, 20% from animal proteins, and 10% or less from carbohydrate. Avoid seed oils like grape seed, canola, sunflower, etc. They are very dangerous for your health.