YES! Me too, I've asked my Endo about this. I believe it does have to do with diabetes; when I'm low or getting even to an 80 I'll start to get cold, when I'm high I sweat, sweat, sweat and get SO hot too...some nights I'm literally up turning up the heat then turning my fan on. I profusely sweat nearly every night and when my blood sugars do big fluctuations. Think about it, one of the first signs of a low blood sugar is SWEATING then chills. Thus, unless my numbers stay stable the entire night, then I don't vary in body temperature. That was one of my symptoms, how I knew something was wrong, I was getting SO HOT, soaking wet at night before Dx. The minute I started on insulin I was FREEZING, FREEZING cold, I've talked to other Type 1 friends of mine, they've experienced the same thing.