1. What is BMI?

BMI (Body Mass Index) is a measure that uses your height and weight to work out if your weight is healthy. The NHS uses BMI as a screening tool to identify possible weight problems in adults.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

• \( weight \) — Your weight in kilograms (kg)
• \( height \) — Your height in meters (m)

Explanation: BMI compares your weight to your height to calculate whether you're a healthy weight for your height.

3. Importance of BMI Calculation

Details: BMI helps identify potential weight issues that could lead to health problems. It's used to screen for weight categories that may lead to health problems but it's not a diagnostic tool.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What are the NHS BMI categories?
A: Underweight (below 18.5), Healthy weight (18.5-24.9), Overweight (25-29.9), Obese (30 and above).

Q2: Is BMI accurate for everyone?
A: BMI doesn't distinguish between muscle and fat, so athletes may have a high BMI without excess fat. It may not be suitable for children, pregnant women, or some ethnic groups.

Q3: What should I do if my BMI is high?
A: Consult your GP. They may suggest diet and lifestyle changes. BMI is just one indicator of health.

Q4: How often should I check my BMI?
A: For most adults, checking every few months is sufficient unless you're actively trying to change your weight.

Q5: Where can I get more advice?
A: Visit the NHS website (www.nhs.uk) or consult your GP for personalized advice about your weight and health.