There was an article on WebMD about diabetics who do not sleep well. When someones blood sugars are high they are up frequently, several times during the night to urinate. People with diabetes tend to be overweight and that increases the risk of getting sleep apnea. Getting enough sleep is so important. If you are suffering with poor sleep the professionals encourage you to have a sleep study done to rule out serious diseases. I personally went through a sleep study done to make sure that I did not have sleep apnea. I don't have apnea but do suffer from chronic insomnia. Many times, suffering from depression can cause insomnia. I have major depression and it is one of the reasons for my insomnia.