What is BMI?
Body Mass Index (BMI) is a measurement used to assess health risks of Obesity
The Body Mass Index or BMI is the most commonly used method for determining a patient’s weight category and body size. It is used to measure whether you are in a healthy weight range for your height.
BMI is calculated by dividing your weight in kilograms by your height in metres squared.
An adult with a BMI of 30 or more is considered Obese.
BMI is usually a good indicator of body fat for most people; however, BMI does not differentiate between body fat and muscle mass. Therefore, those with a lot of muscle bulk will have a high BMI, but are not necessarily overweight or obese.
It’s important to note that a reputable doctor should determine an individual’s personal BMI to assess whether their BMI or excess weight poses a health risk.
An individual’s BMI should not be used alone to assess Obesity.
Further assessments for the diagnosis of Obesity include:
- Blood Tests
- Physical Examination
- Review of Family History
- Waist Measurement
- Skinfold Thickness Measurements
- Evaluation of Diet & Physical Activity
Classifying Obesity
| Category | BMI Range |
|---|---|
| Normal Size | 18.9 to 24.9 |
| Overweight | 25 to 29.9 |
| Class I, Obesity | 30 to 34.9 |
| Class II, Serious Obesity | 35 to 39.9 |
| Class III, Severe Obesity | 40 and greater |
| Class IV, Super Obesity | 50 and greater |
