Bariatric surgery alters the physiology of the stomach to treat obesity by reducing overeating, leading to improvements in diabetes control, cardiovascular health, and quality of life.
The three most common procedures are Sleeve Gastrectomy, Adjustable Gastric Banding, and Roux-en-Y/ Omega Loop Gastric Bypass. Close follow-up and a multidisciplinary approach involving dietitians, exercise physiologists, and psychologists are essential to successful outcomes.
“Weight-loss (Bariatric) surgery is currently the only intervention that can provide significant and long-term weight loss for the morbidly obese.” 
—World Health Organisation