Any procedure requiring "going under" has risks even if rare. It's completely your call although if my doc recommends it I will most likely do it for all the reasons listed by larry mac. I would be too tempted to say cheat a handful of times a year if I thought in the back of my head it was merely an intolerance or an allergy (something worth risking for...
I haven't been diagnosed with anything at this point, but throwing up is something I've been doing about once or twice a week for the last year or so..since cutting out gluten I haven't had to once....hmmmmmm