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OSA is not always positional. Further, there are patients with normal BMI who also don't drink.

While I agree with you and have done this myself, if you're going to make lifestyle change recommendations, at least spell "lose" correctly ;)

I went from ~220 lbs/100 kg to ~160 lbs/ 73 kg. I had to dial back my CPAP over time and eventually switched to a mouth guard which can treat both OSA and TMD.

I suspect I've had apnea since I was a kid, and that was when I was swimming 9x a week and doing swim comps all the time.

Some people just have fat tongues (Ladies, 1 at a time please!) unfortunately

Central apnea is where your brain actively decides it doesn't want to breathe anymore? Nice..

Any way to discern one from another?

A sleep study. Central and obstructive sleep apnea aren't mutually exclusive, either.