I'm really happy for you Erin. I am a completely different person on gluten also. I attribute a lot of it to nervous system inflammation.. that "gluten head" that was mentioned. When I eat gluten i'm transported into a nearly psychotic type of world. Perception disturbances, a feeling that all visual and auditory things are going to morph at any second along with paranoia, panic attacks, motor skill problems, memory loss, random crying, sense of doom, a complete inability to relate to the energy of other people. It's like the energy of other people look more like monsters coming out of the object of a body, than a human being. I also become rather mute, i'm not sure why, it's like something that happens in my brain allows me to have dark emotions but no thoughts. So throughout childhood, I was rather mute. That changed amazingly when I cut out gluten and suddenly I talk too much at times and have opinions. I still have depression, but the world around me doesn't look dark and scary, and there is no intensity of panic attached to my depression.
I would really love if there was more research done on the effects of gluten on the brain and nervous system. also adrenal glands.