ELI5: bmi

high confidence

March 28, 2026

// explanation

// eli5BMI is like a simple tool that checks if your body size matches your height. Imagine you have blocks - if you're really tall, you can have more blocks before it's too much. If you're shorter, you need fewer blocks. Doctors use your weight and height together to figure out if you're at a good size for your body. [1][2][3]

// sources

[1]Calculate Your BMI | NHLBI, NIH

Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

[2]Adult BMI Calculator - CDC

Jun 26, 2024 ... Body mass index (BMI) is a calculated measure of weight relative to height. For adults, BMI is categorized into underweight, healthy weight, ...

[3]Body Mass Index (BMI) Calculator - American Cancer Society

Sep 9, 2025 ... Body mass index (BMI) is a number based on height and weight that can help estimate whether someone is at a healthy weight.

[4]About Body Mass Index (BMI) - CDC

Dec 16, 2025 ... BMI is a measure of weight relative to height. BMI is a quick, low-cost, and reliable screening measure for underweight, overweight, ...

[5]Obesity and overweight - World Health Organization (WHO)

Dec 8, 2025 ... Obesity and overweight fact sheet from WHO providing key facts and information on causes, health consequences, double burden of disease, ...

[6]Does Your BMI Even Matter?video

Video by Doctor Mike

[7]BMI क्या होता है ? What is BMI (Body Mass Index) and how to calculate it from height and weight ?video

Video by Sanjay Meena

[8]What BMI doesn't tell you about your healthvideo

Video by Vox

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