1. What is BMI for Teens?

BMI (Body Mass Index) is a measure of body fat based on height and weight. For teens, BMI is age- and sex-specific and is interpreted using percentile categories rather than adult BMI categories.

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 result is compared to CDC growth charts to determine the percentile for the teen's age and gender.

3. Importance of BMI Calculation for Teens

Details: Tracking BMI during adolescence helps identify potential weight problems that could lead to health issues. It's a screening tool, not a diagnostic tool.

4. Using the Calculator

Tips: Enter weight in kg, height in meters, and exact age (2-19 years). For accurate results, measurements should be taken with minimal clothing and no shoes.

5. Frequently Asked Questions (FAQ)

Q1: Why use percentiles instead of BMI categories for teens?
A: Because teens grow at different rates, percentiles account for normal variations in body fat during puberty.

Q2: What is a healthy BMI percentile for teens?
A: Generally, 5th to 85th percentile is considered healthy weight for age and sex.

Q3: How often should teens have BMI calculated?
A: The American Academy of Pediatrics recommends annual BMI screening for all children and teens.

Q4: Are there limitations to BMI for teens?
A: BMI doesn't distinguish between fat and muscle, so athletic teens may have higher BMI without excess fat.

Q5: What if my teen is above the 85th percentile?
A: Consult a healthcare provider for further evaluation. They may assess diet, activity levels, and other health markers.