We believe I had apnea since my teenage years. I was not fat then. In fact, I have gained weight in the last 4 years. (but, I am losing it at a rate of about 10 pounds a week for the last 3 weeks. Thank God) Had my CPAP since Sept. Set at around 10. blood oxygen was dropping to below 50 %. now stays in the high 90's. Falling asleep on the way to work, and at work, and everytime I sat down quietly. Wife could not sleep for the first 2 weeks I was on it because she was so used to waking up and kicking me to make me breath. The insurance company rented mine for 3 months then paid for it. I was worried because at the time they were supposed to pay for it my employer changed insurance companies and i made it clear I would never give it up. My deviated sceptum makes the nasal masks inappropriate for me so I use the full mask which is a pain, but worth it. Dr has talked about corrective surgury and a jaw strap to be able to try the pillows, but I am not sure that is required. I am praying about it.