BMI Formula:
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BMI (Body Mass Index) is a measure of body fat based on height and weight. For seniors over 65, the healthy range is adjusted to 23-29 kg/m², recognizing that slightly higher weight may be protective in older age.
The calculator uses the standard BMI formula:
Where:
Note: For seniors over 65, the interpretation differs from standard BMI categories.
Details: Monitoring BMI in seniors helps assess nutritional status and health risks. The adjusted range accounts for age-related changes in body composition and the "obesity paradox" where slightly higher BMI may be protective.
Tips: Enter weight in kilograms and height in meters. For height in feet/inches or weight in pounds, convert first (1 kg = 2.2 lbs, 1 m = 3.28 ft).
Q1: Why is the BMI range different for seniors?
A: Research shows that slightly higher BMI (23-29) in seniors may be associated with better outcomes and lower mortality.
Q2: What are the BMI categories for seniors?
A: Underweight (<23), Normal weight (23-29), Overweight (>29). These differ from standard adult categories.
Q3: Are there limitations to BMI for seniors?
A: Yes, BMI doesn't account for muscle mass, bone density, or fat distribution. Waist circumference may provide additional useful information.
Q4: Should seniors try to lose weight?
A: Unintentional weight loss should be evaluated. Intentional weight loss should be medically supervised if BMI is in the normal senior range.
Q5: What if my BMI is over 30?
A: While 23-29 is ideal for seniors, BMI >30 may still indicate increased health risks and should be discussed with a doctor.