The main advantages of the gastric sleeve over gastric bypass are:

1. There is no malabsorption of nutrients as with gastric bypass so the risk of developing malnutrition or vitamin deficiency is very low.

2. The risks of the sleeve gastrectomy are lower than with gastric bypass; yet the rate of weight loss is about the same.

The main advantages of the gastric sleeve over gastric banding are:

1. The rate of weight loss is about two or three times faster with the sleeve

2. There is no implantable device and no adjustments are required