Bariatric Surgery aims at reducing the amount of energy taken from the consumed food by reducing its absorption at the gastrointestinal system.  For this purpose, it uses methods like gastric bypass, gastroplasty, gastric banding, gastric balloon, sleeve gastrectomy, etc.

Reconstructive surgery, on the other hand, aims at removing fatty tissues present on specific areas of the body. This treatment is done for aesthetic purposes and if the patient does not meet the requirements of obesity treatment removed fatty tissues regenerate.