The average age of death for someone with dementia in the UK is approximately 83 to 85 years, though individual variation is wide. People diagnosed in their 60s can expect a longer survival period than those diagnosed in later life, partly because they are generally in better overall health at diagnosis. Alzheimer’s disease typically allows 8 to 10 years from symptom onset, while vascular dementia is often associated with shorter survival due to underlying cardiovascular disease. Dementia is now one of the leading recorded causes of death in England and Wales.