How Does Alzheimer's Disease Lead to Death?

Legendary film star Rita Hayworth. President Ronald Reagan. Charlotte's Web author E.B. White. These household names all had Alzheimer's Disease, and their biographies typically state that this is how they died. They join a long list of celebrities who died from the disease.  Alzheimer's is a neurodegenerative disease that progressively erodes a person's memory and ability to function. But it's not a fatal disease; people with Alzheimer's die from an underlying condition