Question:
What is the official percentage of weight loss one can expect as a result of surgery?

I am planning to have open RNY and would like to know how much I can realistically expect to lose and in what period of time?    — Sharon R. (posted on May 11, 2001)

May 11, 2001
I had an open RNY on 8/16/00 and I have lost 241 pounds. I am almost 9 months post op and I am still losing 1/2 pound a day.
   — DeeDubbs

May 11, 2001
Generally 70% to 100% depending on the procedure (VBG figures vary) and on the individual and how they use that tool is a BIG factor.... I had the Fobi Pouch with silastic band.. My beginning weight was 367 I'm now 153 that's 99% of my excess weight GONE forever and I do expect to get to and maintain 100% :) To see all the many different types of procedures go to my webpage at http://www.angelfire.com/ok3/vbowen8
   — Victoria B.

May 12, 2001
The NYU center for bariatric surgery lists these percentages. You can view their site at http://www.med.nye.edu/bariatric/operations.html RNY: Weight loss ranges from 60% to 80% of excess body weight in patients with a BMI 35-60 kg/m2, over the first 2 years. This equals roughly 80-150 pounds, depending on your original weight. DS: Weight loss ranges from 70%-90% of excess body weight in patients with a BMI 35-85 kg/m2, over the first 2 years. This equals roughly 100-300 pounds, depending on your original weight. After that, there is almost no weight regain. It is one of the most powerful operations to achieve a large amount of long-lasting weight loss.
   — kateseidel

May 12, 2001
My surgeon's brochure says "An average of 40% of preoperative weight is successfully lost. An average of 6% weight regain occurs 3-5 years later, e. g. a 260 pound patient will lose an average of 104 pounds; then will regain 15 pounds for an average permanent weight loss of 89 pounts." This is RNY surgery. It also says "90% success rate."
   — Cindy H.