A Body Mass Index (BMI) is derived from a person’s height and weight, which are used to measure if someone is at an appropriate, healthy weight based on their height. If your BMI goes above the recommended standards for your height and weight, your risk of health concerns could increase. For example: If you have a BMI of 40, you are about 80 to 100 pounds over your normal weight. 

BMI Chart

BMI Co-morbidities Classification Surgical Candidate
25 - 29.9 N/A Overweight No
30 - 34.9 N/A Obese No
35 - 39.9 N/A Severely Obese No
35 - 39.9 Yes Severely Obese Yes
40+ N/A Morbidly Obese Yes