Obesity is a disease in which people have too much body fat. This excess body fat frequently leads to other health problems, such as type II diabetes, asthma, heart disease, high blood pressure, sleep apnea, and arthritis. There are clinical terms used to describe people’s levels of body fat to see if they are candidates for weight-loss surgery. The ideal BMI ranges from 18.5 to 24.9. If your BMI is between 25 and 29.9, you are thought to be overweight. If it is between 30 and 34.9, you are class 1 obese. If it is between 35 and 39.9, you are class 2 obese. If your BMI is 40 or more, you are said to be class 3 or extremely obesity.1 Extreme obesity is sometimes call "morbid” obesity because this degree of excess weight may considerably reduce life expectancy and is associated with an increased risk of developing conditions or diseases such as diabetes, high blood pressure, joint problems, gallstones, stroke, heart disease, and psychosocial problems. Needs additional reference Severely and morbidly obese adult patients are considered candidates for weight-loss surgery.
Source: 1. National Institutes of Health/National Heart, Lung and Blood Institute Clinical Guidelines Evidence Report. NIH Publication 98-4083, September 1998.