Eli5 why is the reason why people with Alzheimer’s Disease die?

Question

What fails in the body?

In: 4352

Answer 1

The brain controls other essential functions. In my Grandmother 27 years ago it was like a computer just failing to reboot, and a progressive loss of function. The worst was inability to swallow, and ultimately starving to death.

In all deaths, it’s ceasing to breathe and heart failing to circulate blood, lymphatic system failing to circulate/compensate fluids. Your brain controls all that stuff.

Here’s the thing: it’s an awful way to go. Heart attack is better. Painful, but quicker.