Definition of Morbid Obesity

Morbid obesity means that an individual is extremely overweight with a high BMI of at least 40+ OR over 100 pounds overweight. Body Mass Index (BMI) is a scale measuring an individual’s excess weight based on factors of height and weight.

A morbidly obese individual generally has one or more health problems, or comorbidity, related to the amount of excess weight. Also, those suffering from being obese have a higher chance of risk for comorbidities and health issues. These obesity-related medical conditions can include type 2 diabetes, hypertension, high blood pressure, sleep apnea, etc.

BMI Calculator


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See If You Qualify for Weight Loss Surgery - Mexico Bariatric Center

Morbid obesity typically defines a body mass index level that is suitable to qualify for weight loss surgery in the United States.

Morbidly Obese Chart

Body Mass Index is a widely used tool to measure obesity. BMI is a very “general” measurement of obesity using height and weight as the only factors.

Morbidly Obese Chart - What is Morbid Obesity - Am I Morbidly Obese

With only two factors measuring excess body fat, BMI does not take into account things like muscle, % body fat, and individuals who have certain variables that put them in a different obesity class than they should be.

What BMI is Considered Morbidly Obese? Morbidly Obese Chart - BMI Chart - What is Morbid Obesity - Am I Morbidly Obese

According to the National Heart, Lung, and Blood Institute, BMI measures an individuals body fat strictly by both height and weight as a standard metric.

  • BMI = 18.5 to 24.9 – Normal
  • BMI = 25 to 29.9 – Overweight
  • BMI = 30 to 39.9 – Obese
  • BMI = 40+ – Morbidly Obese

Am I Morbidly Obese?

Body Mass Index – BMI

Weight Category

Obesity Class

Less than 18.5Underweight
18.5 to 24.9Normal – Healthy Weight
25 to 29.9Overweight
30 to 34.9ObeseClass I
35 to 39.9ObeseClass II
40 to 49.9Morbidly ObeseClass III
Over 50Severely ObeseClass IV