Deb, when you have a sleeve done they sugerically remove part of the stomach. This reduces the size of the stomach. One of the biggest pros to a sleeve is you don't have as much danger as you would with a gastric bypass with malabsortion of Vitamins. It is done laproscopically also. You have a higher precentage rate of weight loss witht the sleeve also. The best thing you can do is look up all info on all the surgeries or ask at the bariatric center you have chosen for more information. Good luck in chose.
Debbie