&gt; it can often resolve when the surgery is &quot;fixed&quot; (e.g., removing lap-bands)<p>If the ailment is exclusively psychological, then presumably you believe this would hold even for a sham surgical intervention.  E.g. you tell&#x2F;convince the patient it&#x27;s been removed but it&#x27;s still there, and they get better.  Is that the case?  Otherwise it sounds like a mixture of physical and psychological, and you are being overly reductive.