I was diagnosed with severe OSA in 2007. Since then, I will proudly say that I have achieved 100% compliance on the BiPAP (14/10 pressures, for anyone who's curious). I've heard that on the one hand, once you have sleep apnea, you have it. In fact, my prescription says, "Projected Length of Need: Lifetime (99 years)." On the other hand, I've heard that OSA can be cured, or at least greatly mitigated, by weight loss. Any of my fellow clydes have any experience with this?