1. What is BMI?

Body Mass Index (BMI) is a measure of body fat based on height and weight. For men over 65, the healthy range is slightly higher than for younger adults, as some extra weight may be protective against frailty and osteoporosis.

2. How Does the Calculator Work?

The calculator uses the standard BMI formula:

Where:

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

Note: For men over 65, we use adjusted BMI categories that account for age-related body composition changes.

3. Importance of BMI for Seniors

Details: While BMI has limitations, it remains a useful screening tool for weight categories in older men. The optimal range for seniors is typically higher than for younger adults.

4. Using the Calculator

Tips: Enter weight in kilograms and height in meters. For height, 1.75 would represent 1 meter 75 centimeters. All values must be valid (weight > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why are BMI ranges different for seniors?
A: Older adults often have less muscle mass and more body fat at the same BMI. Slightly higher BMIs may be protective against frailty.

Q2: What is a healthy BMI for men over 65?
A: Generally 23-27 is considered healthy, compared to 18.5-24.9 for younger adults.

Q3: Are there limitations to BMI?
A: Yes, BMI doesn't distinguish between muscle and fat. A muscular person may have high BMI without excess fat.

Q4: Should waist circumference be measured too?
A: Yes, waist measurement (≥102 cm or 40 inches in men indicates risk) provides additional information about abdominal fat.

Q5: How often should seniors check their BMI?
A: Every 6-12 months, or more often if experiencing significant weight changes.