A child's height and weight should increase proportionately as he or she grows. This is known as a healthy height-weight trajectory. If the weight gain is
disproportionate to the height increase, the accumulation of body fat occurs.
Since there is no way of directly measuring body fat volume, doctors use a guideline called the Body Mass Index (BMI) to determine if the child is overweight. The formula is : BMI= Weight (kg) / height (m)2.
- If the BMI is:
- 25 -29 the child is overweight
- 30 -35 the child is obese Class 1 and at mild risk
- 36 - 39 the child is obese Class 2 and at moderate risk
- 40 and beyond the child is obese Class 3 and at high risk