I’ve never known anyone who used/uses a CPAP machine for sleep apnea who was not morbidly obese or close to it, and most are men. All had been overweight for more than 5 years, and were advised by MD and Naturopathic doc both that unless they got on a strict diet now, their lifespan was going to be notably short-one was even offered a gastric bypass, but refused-none of them lost more than a few pounds before starting to pig out again, even gaining more weight.
Only 2 are still among the living-the others had fatal heart events in their sleep, CPAP and all...
I’m not obese and use it. It is just my physiology that is the problem. Apparently men with thick necks like myself experience it more as well. Just happens that my tongue collapses over the air ways when I sleep. Nothing to do with being over weight, but that of course can complicate it.
My husband has had sleep apnea for as long as I have known him, long before he put on some pounds. He is not obese.
But, of course, all overweight people are deemed evil by many around here.
I weigh only 160 at 5’ 10” and currently take 14 lbs of pressure on my CPAP and have been at that level for about 4 years now (a retired male geezer).
I think my O2 sat was down to 70% several times a night during my sleep lab. Not good!