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BMI Is Not TMI

Posted Nov 29 2008 12:25pm

Today's I was coveringBody Mass Index (BMI)with the 8th graders of City Collegiate Public Charter for a program that is offered by my new non-profit organization,THE INFINITY WELLNESS FOUNDATION, and I thought you'd learn something by covering it too!

I'm not a huge fan of using BMI with the majority of my clients because unfortunately, BMI is not TMI (Too Much Information).

My biggest gripe with BMI is that doesn't take into consideration some important info in it's measurement - which is accurately represented by the picture below...



Two people with the same weight and height will have the same BMI, even if 
their composition is different!


Body Mass Index:
  • Compares your height versus your weight
  • Determines a healthy weight based upon how tall someone is
  • Considered a reliable indicator of total body fat

BMI Categories:
  • Underweight = <18.5
  • Normal weight = 18.5-24.9
  • Overweight = 25-29.9
  • Obesity = BMI of 30 or greater

The Limits Are:
  • Primarily uses weight which can fluctuate daily
  • BMI will not recognize a loss of inches that can occur before a lose in weight 
  • It may overestimate body fat in athletes and others who have a muscular build
  • It may underestimate body fat in older persons and others who have lost muscle mass

Bottom line on BMI: 

It can be used to help track and monitor, but it's limitations make it not the best choice available...


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