I have done the Healing Codes too and I really like them. However, I would say that a person really needs to believe in the system (which is really very spiritual/psych-emotional in nature) AND put a lot of work (hours and hours) into using the system. That said, I think the codes are wonderful. They cut through any "medical" or physical problem and work directly on our spiritual emotional pain. Relieving this is it's own reward. I cannot say for sure that this leads to physical healing, but I really didn't use them for physical problems myself, but for Depression and anxiety, which are emotional issues anyways.