1. What is BMI for Seniors?

Body Mass Index (BMI) is a measure of body fat based on height and weight. For seniors over 65, the interpretation differs slightly from younger adults, as slightly higher BMI may be protective against frailty and mortality.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Interpretation for Seniors:

• Underweight: BMI < 23
• Normal weight: BMI 23-26.9
• Overweight: BMI 27-29.9
• Obese: BMI ≥ 30

3. Importance of BMI for Seniors

Details: While BMI has limitations, it remains a useful screening tool for weight categories in older adults. However, body composition changes with age, so results should be interpreted in clinical context along with other assessments.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For height, 1 meter = 100 cm. Example: 1.75 m = 175 cm.

5. Frequently Asked Questions (FAQ)

Q1: Why are BMI ranges different for seniors?
A: Research shows slightly higher BMI may be protective in older adults against frailty and mortality.

Q2: What are BMI limitations for seniors?
A: BMI doesn't distinguish between muscle and fat, and may underestimate obesity in those with sarcopenia (muscle loss).

Q3: Should waist circumference be measured too?
A: Yes, waist measurement provides additional information about abdominal fat distribution.

Q4: Is BMI useful for very frail elderly?
A: In frail elderly, other nutritional assessments may be more appropriate.

Q5: What's a healthy weight loss goal for obese seniors?
A: Gradual weight loss (0.5-1 kg/week) combined with strength training is recommended.