Your first link seems to be in support of a keto diet, your second link is a correlational study, and your third link is a mouse study. You can check my other

Your first link seems to be in support of a keto diet, your second link is a correlational study, and your third link is a mouse study. You can check my other comment above for a bunch of other sources/studies on keto diets reversing Alzheimer's symptoms if you'd like.