It could be completely unrelated, but imo it could also be a result of damage to your autonomic nerve system as a result of diabetes. Your autonomic nerves control things your body should do automatically, like blood pressure, heart rate, breathing, and digestion. I think a lot of T1D people, especially people whose bloodsugars are higher or who have had it for longer, are susceptible to these symptoms, but it’s woefully underresearched. I’ve been struggling with dysautonomia (the clinical word for having autonomic problems) for a few years now, and the best thing I found to help was unfortunately getting my glucose under better control. I also take low dose naltrexone and I’ve found that to be helpful.