Alzheimer's disease is a progressive neurological disorder that affects memory, thinking, and behavior. Unfortunately, the disease ultimately leads to death. As the disease progresses, the individual may experience worsening cognitive decline, loss of memory, confusion, and difficulty with everyday activities. In the final stage, the individual may be unable to recognize family or friends, be completely bedridden, and require 24-hour care. As the brain continues to deteriorate, the individual may eventually pass away due to infections, pneumonia, or other complications. Therefore, the final stage of Alzheimer's that leads to death is when significant cognitive decline and loss of bodily functions occur, making it impossible for the individual to care for themselves.