how long do dementia people live
average dementia survival 4 5 years jan 10 2008 the average survival time for people diagnosed with dementia is about four and a half years new research shows those diagnosed before age 70 typically live for a decade or longer in an effort to learn more about survival characteristics among patients with alzheimer s disease or other dementias researchers from the u k s university of cambridge followed 13000 people who were aged 65 and older for 14 years