I don't remember where I read it but when asked about life after death, some dementia caregiver said looking at her patients she wasn't even sure of life before death. I have seen some friends parents with late stage dementia and it is horrifying. A significant percentage of caregivers for Alzheimer patients die before the patients. It is amazing that different parts of our bodies age at far different rates and some people are left with decrepit bodies and fine minds and for others it is the other way round.