 I am Dr. Sumit Talwar, I am the Chairman of Bariatric Surgery of Manipal Health & Prizes Private Limited. Bariatric surgery is extremely effective in properly selected patients. Patients who are psychologically not ready for this surgery or if they have a disease which is causing their weight gain will probably not have so much benefit. But generally speaking more than 95% of patients will have definite benefit after Bariatric surgery.