Bariatric surgery may be “restrictive,” which reduces the amount of food intake, or “restrictive/malabsorptive,” which restricts intake and interferes with the digestion as well. Currently, there are four standard types of bariatric surgery procedures as follows: 1. Laparoscopic adjustable gastric banding 2. Gastric sleeve surgery or laparoscopic sleeve gastrectomy 3. Gastric bypass or Roux-en-Y surgery 4. Gastric bypass or Roux-en-Y surgery