If diet had an effect on Alzheimer's, then those patients that have altered medical diets / starve at the end would show improvement, no?
"... something as simple as taking fish oils had reduced dementia risk by 9%. This is equivalent to the risk reduction found from quitting smoking. However, the effect is not the same without B vitamins."
So yeah. My summary simply illuminates the pathway/reason why as well as why there are so many confusing comorbidities.