Register for A Free Weight Loss Surgery Seminar To attend a seminar, you must be at least 18 years of age, and meet the following criteria: Have a BMI (body mass index) of 40 or greater, or have a BMI of 35-39.9 with one of the following: diabetes, high blood pressure, or sleep apnea. Calculate my BMI A history of obesity for 5 years or more. Documented failed attempts at conventional weight loss programs. The ability to follow pre and post-operative instructions for diet and exercise. No active substance abuse. To register by phone or request an Interpreter, please call (585) 341-0366.