oschencloss

> it can often resolve when the surgery is "fixed" (e.g., removing lap-bands)

If the ailment is exclusively psychological, then presumably you believe this would hold even for a sham surgical intervention. E.g. you tell/convince the patient it's been removed but it'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.