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Friday, August 10, 2007

OBESITY & BODY MASS INDEX

Obesity

Obesity is the condition of being much too heavy for ones height. In other words, it means to be highly overweight. People are called

To know if a person is overweight, the body mass index (BMI) is calculated, by dividing the weight (in kilograms) by the height of the person in meters, squared (multiplied by it self). (This is only meaningful for adults who are fully grown, and should not be used for children.)


To estimate BMI, locate the point on the chart where height and weight intersect. Read the number on the dashed line closest to this point. For example, if you weigh 69 kg and are 173 cm tall, you have a BMI of approximately 23, which is in Normal Weight.

You can also calculate your BMI using this formula:

BMI = weight(kg)/height(m)2

The current definitions commonly in use establish the following values, agreed in 1997 and published in 2000:


  • A BMI less than 18.5 is underweight
  • A BMI of 18.5–24.9 is normal weight
  • A BMI of 25.0–29.9 is overweight
  • A BMI of 30.0–39.9 is obese
  • A BMI of 40.0 or higher is severely (or morbidly) obese

A BMI of 35.0 or higher in the presence of at least one other significant comorbidity is also classified by some bodies as morbid obesity



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