Ok, I am copying this from a different forum that I just found last night. But I thought it was a good break down of the VSG vs RNY:
1) Malabsorption of calories/fat only lasts 2 years, but you get a lifetime of vitamin/nutrient malabsorption with RNY, doesn't seem like a fair trade off.
2) The regain stats and long term complications that I have witnessed with real life friends (plus the information on internet forums, and long term data presented) was downright scary. I can give you the detailed list of complications, but the main ones are major vitamin deficiencies, pouch or stoma dilation, bowel obstructions and intestinal strictures.
3) The number of patients seeking revisions 3-7 years out from RNY to either DS or ERNY really scared me. This was going to be my 2nd and FINAL WLS.
4) I loved the fact that I would keep my pyloric valve, with RNY you lose it.
5) I have a normal, fully functioning stomach, just smaller than what God gave me, no rerouting, no pouch
6) No blind stomach left behind that can still develop ulcers or cancers, yet can be very difficult to diagnose and scope
7) The rate of loss for VSG is neck and neck vs. RNY without all the long term complications
8) No food or medication restrictions. I can take NSAIDS and I don't dump on sugar like 30% of RNY patients experience. Plus, this whole idea of needing to be sick, fatigued, have massive diarrhea and gas pains after eating a cookie seems a little ridiculous. Sorry, but I want to live as normal as a life as possible, and naturally thin people enjoy a cookie or a piece of pie here and there.