I think you hit the nail on the head. I've been chronically depressed my whole life. Which of course lends to fact that I could never stay on any diet to loose my weight.
But ever since Day # 10 for me, the day I was hit with all this energy. I have not had any depression at all. I just feel great. I guess this is how we are meant to feel.
I keep an offline Journal. and in I wrote the same thing, that I wonder if all my years of depression could not be related to blood sugar levels.
To feel this great and have a little side effect of loosing all my weight. hmmmmm I think I'm on this diet for life.