I never was diagnosed as pre-diabetic. My doctor was very surprised at the blood test results. And I have had sleep apnea for many years, starting when I was at a normal weight. I use the CPAP every night and it indicates good results as far as incidences per hour go, but I'm still not sleeping more than five hours a night. I am under the care of a sleep doctor. I know the sleep deprivation, weight gain, and diabetes are all tied together to a certain extent. Don't know where one starts and the other ends.