Eli5 how exactly does dementia cause people to die faster?

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I completely understand how dementia is horrific in that it eliminates a persons mental faculties causing them to forget anyone and everything they knew, but what/why does it eventually cause death? Is it because their body “forgets” how to function or what?

Side note: maybe I’m wrong in assuming that everyone will die once diagnosed? Is their a spectrum for this?

In: Biology

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Anonymous 0 Comments

It’s not the dementia per se that kills them. It’s the overwhelming inability to perform basic human functions that does them in.

They lose ability to communicate properly = they can’t ask for help when they need it.
They spend prolonged periods of time sitting down = they lose muscle mass, grow weak, get poor cardiac and pulmonary function from the immobility
They tend to forget things = errands that are important for life (buying groceries, self hygiene, doctor’s appointments) are often forgotten

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