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

Question

What fails in the body?

In: 4352

Answer 1

The brain fails.

The most common cause of death is pneumonia (infection in the lungs). As the disease progresses, it becomes increasingly difficult to chew or swallow properly, and it’s common to inhale bits of food and liquid that “go down the wrong pipe” and eventually cause an infection in the lungs. Alternatively, death comes by dehydration or malnutrition from being unable to drink or eat properly.

More rarely people die of infections related to bedsores, urinary tract infections, or injuring themselves.