Healthy BMI for Children

It is common for parents to worry about their child’s weight. We all want our children to be healthy but sometimes we wonder whether they are underweight or overweight. So how much should my child actually weigh?

Children and adolescents use a slightly different measure when it comes to body mass index (BMI). BMI is basically a measure of body fat and it is used to determine whether a person is a healthy weight for their height. This is, the BMI will indicate whether a child is underweight, normal weight, overweight or obese. Doctors and parents may use BMI to determine how appropriate a child’s weight is for a certain height and age. As children (and adolescents) grow, the proportion of body fat changes and this will affect their BMI. Because a normal weight changes with age, doctors need to plot a child’s BMI measurement on a standard growth chart rather than the normal adult BMI ranges. Separate charts are used for boys and girls to account for different growth rates and body fat proportions relevant as their bodies mature.

Similarly, percentile charts take into account age and gender and are a great way to assess a child’s physical growth in relation to other kids the same age. Both of these measures are effective and are often used in conjuntion with one another.

From the age of 2 years old it is not uncommon for a child to have routine BMI checkups. These measurements then may be plotted on a chart against those of other kids the same age. This information is recorded in a personal medical record and this forms the basis for your child’s growth to be monitored.

By identifying kids at risk of being overweight or underweight early is the best way to prevent adult weight related health problems. Healthy eating and exercise habits are essential and children need plenty of guidance particularly in relation to healthy foods and nutrition.

BMI and percentile charts are readily available on the internet and from your health practitioners. Here is a great resource and good starting point for anyone interested in measuring their child’s BMI:

http://kidshealth.org/parent/growth/growth/bmi_charts.html