[ninesnines]

I would like to chime in here!

It's not that individuals don't want to sleep, it's that oftentimes AD, PD, etc pts will present with sleep problems over 20 years before disease onset, and it isn't because these patients aren't trying. These patients will present with sleep disorders like REM sleep behavior disorder, and these seem to predate these disease onsets, but may also be a symptom of early stages of the disease.

TDLR: its not that people don't want to sleep, its oftentimes that AD pts present with sleep disorders decades before onset