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.
Those with physiological issues like yourself are apparently in the minority-and I certainly sympathize with you-the only issue any of the people I know who use a CPAP have is morbid obesity, according to them.