How does Alzheimer's result in death?
The progressive decline of cognitive and motor functions can be fatal. In such cases, Alzheimer’s is often attributed as the underlying cause of death. Alzheimers statistics can be skewed however, if the cause of death is not attributed properly.
The national rate of Alzheimer's deaths rose sharply starting in 2013. This sudden increase may be due in part to changes made to diagnostic protocols in 2011.  Because Alzheimer’s is only listed as the underlying cause of death in individuals previously diagnosed before death, an increase in diagnoses would likely cause a concurrent increase in statistics about deaths attributed to Alzheimer’s.