Bariatric surgery (best weight loss surgery) is the only scientifically proven method for long-term and effective weight loss. Bariatric Surgery means modification or alteration of the gastrointestinal tract to induce weight loss. It includes a range of procedures from simple restrictive to combined restrictive and malabsorptive. Majority of the obese individuals fail to reduce weight by diet restriction and regular exercise. Even if they lose initially, weight is regained due to the effect of the fat set point.