Nutrition Myths
Advertisement

Body Mass Index – BMI

According to the World Health Organization, the Body Mass Index is an index commonly used to classify underweight, overweight and obesity in adults. BMI is obtained by dividing the weight in kilograms by the square of the height in meters (kg/m2). It is a commonly used index to classify overweight and obesity in adults. (1, 2)

This index is age and gender independent. However, it has some limitations, since:

  • Different populations present different body proportions and body build. This means that a BMI in one country has distinct health implications when compared with the same BMI in another country;
  • It doesn’t consider the varying contributions of bone mass, muscle mass and fluid to body weight;
  • The percentage on body fat increases with age and is higher in women.

The BMI has the following cutting points, representing several classifications.

ClassificationBMI(kg/m2)
Underweightless than 18.50
      Severe thinnessless than 16.00
      Moderate thinness16.00 - 16.99
      Mild thinness17.00 - 18.49
Normal range18.50 - 24.99
Overweight≥ 25.00
      Pre-obese25.00 - 29.99
      Obese≥ 30.00
           Obese class I30.00 - 34.99
           Obese class II35.00 - 39.99
           Obese class III≥ 40.00

Related Posts

Obesity in England – Statistics Latest statistics show that in 2014 around one-quarter of adults in England were obese and 2% of men and 4% of women were morbidly obese. The statistics also show differences between gender and ethnic/racial group.
Does eating nuts make you fat? Adding the right amount of nuts to a balanced diet can slightly help in weigh loss instead of weigh gain.
Obesity in adults – Global Statistics In 2014, 39% of the global population were considered overweight and 13% obese. Of the developed countries, United States had the highest percentages and Japan the lowest.
Does caffeine help in weight loss? Caffeine exerts some weight reducing effects in the short term, but is not an effective weight loss remedy in a long term. See why..
Obesity in United States – Statistics Latest statistics show that in the period between 2011 and 2014 more than 30% of adults in the United States were obese. The statistics also show differences between gender, ethnic/racial group.
Advertisement
Advertisement

Get updates

Receive regular updates on nutrition myths, facts and curiosities. All based on the latest scientific evidence.