1.Bariatric Surgery and Gastric Bypass
Obesity surgery or Bariatric surgery causes weight loss by restricting the amount of food that a stomach can consume, causing malabsorption of nutrients. Most weight loss surgeries today are performed by using minimally invasive techniques such as laparoscopic surgery. The most common bariatric surgery procedures are gastric bypass, sleeve gastrectomy, the adjustable gastric band, and biliopancreatic diversion with duodenal switch.
Gastric bypass is considered the ‘gold standard’ of weight loss surgery. Gastric bypass surgery makes the stomach smaller and causes food to bypass part of the small intestine. It produces significant long-term weight loss (60 to 80 percent excess weight loss). It can also produce favorable changes in gut hormones that reduce appetite and enhance satiety.