I was recently diagnosed with severe sleep apnea after a sleep study that was ordered by a neurologist. I had been experiencing migraines after starting fosamax. The headaches stopped after the fosamax was discontinued. I had a CT and the doctor didn't think I needed an MRI, but ordered the study. I'm overwhelmed by all of this. I can't see myself hooking up to a mask every night. What really bothers me is that Medicare monitors my usage. I guess I am just an aging hippie and doesn't like my data 'out there .' Right now I am waiting for a call from a company to give me a machine. I read that CPAP can cause an increase in BMI as well as insulin resistance. Does anyone know of side effects from using a CPAP? I already have osteoporosis and don't want to add more to the list if I can help it. Thanks in advance for any input.