Most people who have Roux-en-Y gastric bypass surgery lose 70 percent of their excess weight and they keep it off. It is not uncommon for people who undergo gastric bypass surgery to lose 100 or more pounds over one year. Follow-up studies show that people have maintained that loss long term.
Those who undergo the sleeve gastrectomy procedure see about 60 percent loss of excess weight.
With the Lap-Band® procedure, people lose 50 percent of their excess weight. It is typical for people to reach their goal weight after two years.
In addition to losing weight, other benefits of bariatric surgery include:
Better health status for problems associated with obesity such as high blood pressure, degenerative joint disease and diabetes.
Reduced use or elimination of medications related to obesity-related diseases.
Improved outlook on life.