What is the average time that a person with Alzheimer's disease lives after being diagnosed?

The average lifespan of a person diagnosed with Alzheimer's disease typically ranges around 10 years after diagnosis. This period can vary greatly among individuals, depending on various factors such as age at diagnosis, overall health, and the presence of other medical conditions. Research suggests that while some individuals may live for as few as 3 to 4 years after diagnosis, others may live 15 years or more. However, the most commonly cited average aligns closely with the 10-year mark. This understanding is important as it helps caregivers and families plan for future care needs and manage expectations regarding the progression of the illness.