Lack of quality/quantiy sleep is paramount for overall health.
Longtime sufferer ALSO use a CPAP machine for sleep.
Doesn't surprise me that sleep is also tied to it.
7-9 hours. The indiduals who tell you/read about going on 4-5 hours and seem to be healthy may be the exception to the rule OR they have health issues not apparent.
No one is exempt from requiring good sleep.