1. What is BMI?

Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, normal weight, overweight and obesity in adults. It is calculated by dividing weight in kilograms by height in meters squared.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Body weight in kilograms
• \( height \) — Height in meters

Explanation: The formula provides a simple numeric measure of a person's thickness or thinness, allowing health professionals to discuss weight problems objectively with their patients.

3. Importance of BMI Assessment

Details: BMI is an important screening tool for potential weight problems in adults. It is particularly useful in eating disorder assessments as it provides an objective measure of weight status.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For most accurate results, measure weight in the morning after using the bathroom and before eating.

5. Frequently Asked Questions (FAQ)

Q1: What are the BMI categories?
A: Underweight (BMI < 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (≥30).

Q2: Is BMI accurate for everyone?
A: BMI may not be accurate for athletes (muscle weighs more than fat), pregnant women, or the elderly.

Q3: How is BMI used in eating disorder assessment?
A: In Australia, BMI is one of several measures used to assess severity of eating disorders like anorexia nervosa.

Q4: What BMI is considered underweight?
A: A BMI below 18.5 is generally considered underweight for adults.

Q5: Should BMI be the only measure of health?
A: No, BMI should be considered alongside other measures like waist circumference, diet, and physical activity.