Obesity is broadly defined as having a body mass index (BMI) of 30 or higher. However, there are different types of obesity classified by their severity. Although the term "morbid obesity" was used in ...

Extremely obese people — those with a body mass index (BMI) greater than 40 kg/m 2 — have higher mortality rates, and most of these additional deaths are caused by cancer, heart disease, and diabetes, ...