However, there is NOTHING other than perhaps lifestyle changes that can be done to change it at this point. That raises a good question, do you really want to know? My parents were perfectly normal when Bush was President, and living a good, rich life. They both have severe Alzheimers now. What would it have brought them to know?
Somewhere I read the story of a group of Catholic “nuns” whose lives were regimented so well that there was not any evident case of Alzheimer’s dementia. There was zero doubt on any day or hour what they were going to be doing, whether worship (to a standard liturgy) or a known kind of chore, and there was zero doubt as to its meaning (an offering to God).
A regimented supervision like that might seem extreme but it would be a more dignified way to complete life for Alzheimer’s victims until an effective biological therapy has been devised. I just mention Catholic nuns because that is what the story was about; it could surely be done in other flavors of faith as well. Atheists might have a problem here.