Obesity can be checked primarily by calculating your Body Mass Index (BMI).
Understanding Body Mass Index (BMI)
BMI is a simple calculation that uses your height and weight to estimate the amount of body fat you have. It's a widely used screening tool for identifying potential weight problems, including obesity.
How to Calculate BMI
The formula for calculating BMI is:
BMI = weight (kg) / height (m)²
- Weight: Your weight in kilograms.
- Height: Your height in meters.
Example BMI Calculation:
Let's say you're 1.75 meters tall and weigh 70 kilograms.
- Square the height: 1.75m x 1.75m = 3.0625 m² (approximately 3 m²)
- Divide the weight by the squared height: 70 kg ÷ 3.0625 m² = 22.86 (approximately 23)
Therefore, your BMI is approximately 23.
BMI Categories:
BMI results are interpreted based on standard categories:
| Category | BMI Range |
|---|---|
| Underweight | Below 18.5 |
| Normal Weight | 18.5 – 24.9 |
| Overweight | 25 – 29.9 |
| Obese | 30 or higher |
Additional Methods
While BMI is a useful initial assessment, it does not directly measure body fat. It's essential to consider:
- Waist circumference: Excess fat around the waist can indicate a higher risk of health problems.
- Body composition analysis: Techniques like DEXA scans or bioelectrical impedance analysis can provide more detailed information about body fat percentage.
When to Consult a Doctor
If your BMI indicates that you are overweight or obese, or if you have concerns about your weight, it is advisable to consult with a healthcare professional. They can provide a more comprehensive assessment and guide you with personalised advice and treatment options.
