Based on Body Mass Index (BMI) classifications, obesity is defined by a BMI of 30 or higher.
Understanding BMI and Obesity
Body Mass Index (BMI) is a screening tool used to categorize a person's weight relative to their height. While it's not a direct measure of body fat, it's commonly used to assess weight categories, including overweight and obesity.
According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), specific BMI ranges are used to classify weight status in adults aged 20 and older.
BMI Classifications
The reference provides the following classifications:
| BMI | Classification |
|---|---|
| 18.5 to 24.9 | Normal, or healthy, weight |
| 25 to 29.9 | Overweight |
| 30+ | Obesity (including severe obesity) |
| 40+ | Severe obesity |
Therefore, the number associated with the classification of "Obesity" is a BMI that is 30 or greater. This includes both general obesity (BMI 30 to 39.9) and severe obesity (BMI 40 and above).
