Numerous operations are carried out on obese patients as part of bariatric surgery (also known as weight loss surgery). The standard of care treatments for long-term weight loss (Roux en-Y bypass, sleeve gastrectomy, and biliopancreatic diversion with duodenal switch) primarily work by changing the levels of the gut hormones that regulate satiety and hunger, creating a new hormonal weight set point. The best method for treating obesity-related issues and causing weight loss is bariatric surgery.
Studies conducted over a lengthy period of time in 2009 have shown that the treatments lead to considerable long-term weight loss, the resolution of diabetes, an improvement in cardiovascular risk factors, and a drop in mortality from 40% to 23%. By the year 2022, bariatric surgery will be advised for obese adults with a BMI of at least 40 and for those with a BMI of at least 35 who also have an obesity-related ailment..
Additionally, those with type 2 diabetes and poorly managed hyperglycemia who have a BMI over 30 are advised to undergo bariatric surgery by worldwide diabetic organisations.