Yes, I am a type I insulin diabetic and I have been for over 35 years. In the past three months, I have been experiencing considerable shaking, which is similar to low blood sugar, but my blood tests are not to discerning. Even when my blood tests are relatively high, I feel like I m having an insulin reaction. I m wondering if this shaking and lightheadedness is related or not. Both my father and my mother s father died from the effects of Parkinson s disease.