What is BMI (Body Mass Index)?

BMI (Body Mass Index) is a numerical value used to estimate body fat based on a person’s height and weight. It’s a widely accepted method to classify underweight, normal weight, overweight, and obesity in adults.

BMI is not a perfect measurement, but it’s commonly used by doctors and health professionals to assess whether an individual is underweight, normal weight, overweight, or obese. Learn more from the World Health Organization.

Why is BMI Important?

• Quick and easy way to assess health risk
• Helpful in identifying potential weight-related issues
• Used in medical guidelines for diagnosing obesity

BMI Categories

Limitations of BMI

While BMI is a useful screening tool, it doesn’t measure body fat directly or account for:

• Muscle mass (e.g., athletes may have high BMI but low fat)
• Bone density and body composition
• Gender or age-specific differences

For a more complete picture of your health, BMI should be considered alongside other factors such as waist circumference, blood pressure, and lifestyle habits.