Question: what is the difference between being obese and morbidly obese?
Answer: Obesity is considered to be when the BMI is equal to, or greater than, 30 kg/m2 (Table 1). When a person's BMI is over 40 kg/m2, this is termed 'morbidly obese' or 'obesity III', with 0.9% of men and 2.6% of women being within this category (NICE, 2006).