1. What is BMI?

Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. It provides a reliable indicator of body fatness for most people.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Explanation: The formula divides weight by the square of height to account for the fact that weight increases with the square of height.

3. Importance of BMI Calculation

Details: BMI is a simple, inexpensive screening method for weight category—underweight, healthy weight, overweight, and obesity. For seniors, maintaining a healthy BMI can help prevent various health problems.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For seniors, BMI interpretation may differ slightly from standard categories.

5. Frequently Asked Questions (FAQ)

Q1: Are BMI categories different for seniors?
A: Some experts suggest a slightly higher BMI range (24-29) may be healthier for older adults compared to younger adults.

Q2: What are normal BMI values?
A: Standard categories: Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (≥30).

Q3: What are limitations of BMI?
A: Doesn't distinguish between muscle and fat, may underestimate body fat in older people who have lost muscle mass.

Q4: Should seniors aim for the same BMI as younger adults?
A: Some research suggests slightly higher BMI may be protective in older age, but this should be discussed with a doctor.

Q5: What other measurements complement BMI?
A: Waist circumference and body composition tests provide additional useful information about health risks.