THE word Bari or Baros in modern Greek means weight, burden, obese. Bariatric surgery is surgery for obesity. It is currently the only effective and sustainable weight loss method for those who have difficulty in losing significant weight despite food restriction and exercise.
An obese person tends to have multiple medical problems such as diabetes, hypertension, hypercholesterol and so on, hence bariatric surgery is not only for obesity, it also improves or helps alleviate such conditions. That is why it is sometimes referred to as metabolic surgery.