My two favorite books are, "The Body Keeps the Score, and "Feelings Buried Alive Never Die. These books describe how unprocessed emotions and trauma become trapped in our physical bodies and subconscious causing imbalance or disease. The AO Scan technology combines the Inner Voice Program, using binaural beats, with its biofeedback/bioresonance technologies to release those underlying emotions and remind the body how to come back to balance. Many people try to focus on one or the other, but the brain-body connection goes hand in hand. You will have difficulty sustaining posisitive physical changes if you don't address the underlying emotions that may have contributed to them. I had an epiphany while healing about the relationship and similaties between autoimmune disease and trauma. Trauma can cause PTSD symptoms, where even things that are relatively safe can become triggers such as loud & unexpected sounds, smells and mistrust in people. With autoimmune, your body interprets your own processes as invaders an it attacks itself. Othertimes, it is unable to correctly fight off harmful pathogens. I believe that many mental health and eventually health challenges are often caused by proponged nervous system dysregulation and over activation. So the key seems to be in retraining the nervous system and brain to reacting appropriately to actual threats.