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BMI Calculator Patient UK

BMI Formula:

\[ BMI = \frac{weight\ (kg)}{height^2\ (m)} \]

kg
meters

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1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to determine if your weight is healthy. It's widely used as a screening tool to identify potential weight problems in adults.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

\[ BMI = \frac{weight\ (kg)}{height^2\ (m)} \]

Where:

Explanation: The formula relates weight to height squared, providing a standardized measure that can be compared across different heights.

3. Importance of BMI Calculation

Details: BMI helps assess whether you're underweight, normal weight, overweight, or obese. While not a direct measure of body fat, it correlates with body fatness for most people.

4. Using the Calculator

Tips: Enter your weight in kilograms and height in meters. For accurate results, measure your height without shoes and weight with minimal clothing.

5. Frequently Asked Questions (FAQ)

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

Q2: Is BMI accurate for everyone?
A: BMI may overestimate body fat in athletes and underestimate it in older people who have lost muscle mass.

Q3: Should children use this calculator?
A: No, children need age- and sex-specific BMI percentile charts.

Q4: What's a healthy BMI range?
A: For most adults, 18.5 to 24.9 is considered healthy.

Q5: What if my BMI is high?
A: Consult your doctor who may assess other factors like waist circumference, diet, and activity levels.

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