The DX "disturbed energy field" can be traced back to a particular nursing theorist that believed that the body has an energy field that surrounds it and that when that energy field is disturbed it leads to illness. I should be able to remembe the theorist right now but I can't... I'd have to look it up. It might have been Martha Rogers or something like that . Anyway. for what its worth... thats where that DX came from.