My father was diagnosed in 2000 and passed away in 2008. I think it all depends on the individual and if there are other health issues to be concerned about. Also the meds that are out there I think have some way of slowing it down a bit, but not sure if that really even helps. My Dad was on aricept. Each person is different.
Alzheimers at age 20? I didnt even know that wass possible
A friend of mine's mother had alzheimer's and was diagnosed at age 20. She died 4 years ago and she was in her 50's. So, it really depends on if you have some other disease along with it and how severe the alzheimer's is. My Grandfather, on the other hand, had diabetes and alzheimer's and he was 63 when he was diagnosed with alzheimer's. His was extremely severe and only lived one year. So, every person is different.
I have taken care of my husband's grandmother for over two years who had Alzheimer's and my mother has it. From what I have researched, it is the body shutting down that takes the patient. They start to not want to eat so nutrition plays a big part in it in the latter stages. If they get something like pneumonia, it's harder and harder for them to recover. Grandma was diagnosed with it in her early 80's and she died from pneumonia at the age of 92. I hope this helps.
I just started researching this topic as I have 2 aunts on my mom's side with Alzheimer's.
From what I've read thus far, 7 years seems to be the average life expectancy.
But, I don't know how the statistics would apply to someone in their 90s; nor if old age has an impact on how quickly the disease advances. I would think that old age could very well take the person before they actually succumb to the disease... but, that's just my non-professional, uneducated guess.