What Is BMI?
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether you are underweight, normal weight, overweight, or obese. It was developed by Belgian mathematician Adolphe Quetelet in the 1830s and remains widely used as a quick screening tool.
BMI Formula
BMI = weight (kg) / height (m)²
For imperial units:
BMI = (weight (lb) × 703) / height (in)²
Limitations of BMI
BMI is a useful screening tool but has limitations. It does not distinguish between muscle mass and fat mass, so muscular individuals may have a high BMI despite being healthy. It also does not account for age, sex, bone structure, or fat distribution. Always consult a healthcare professional for a complete health assessment.
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered healthy for most adults. However, the ideal BMI can vary based on factors like age, sex, and ethnicity.
Is BMI accurate for athletes?
BMI may overestimate body fat in athletes and people with muscular builds, as it cannot distinguish between muscle and fat. Body fat percentage or waist-to-height ratio may be more accurate for these individuals.