Diabetes is an autoimmune disorder but it is not caused by a leaky gut. As far as I, and science, is concerned the best description for IM would be a doctor who believes in using non scientific methods. use alternative methods that have never been proven in studies to work. Typically they are not much different than snake oil salesman.
I will stick with the real doctors who use methods proven to work in the majority of patients and not just the placebo effect.