How Accurate is BMI for Kids?
Experts generally consider BMI for kids to be a good measure of body fat, at least among heavier children. But there are some cases in which BMI might be misleading. Athletic kids, in particular, may fall into the overweight category when they are actually muscular.
Your child's BMI is important, but it is only a piece of the picture. If a BMI percentile indicates that your child is not within the healthy range, she needs a complete weight and lifestyle evaluation with a pediatrician.
The pediatrician will likely follow up with an exam to see how far along your child is in her development and perhaps tests for weight-related health conditions, and by asking questions about her diet and exercise, whether weight is an issue for her, and your family history. This information will allow the health care provider to determine the best way to respond to an underweight, overweight, or obese BMI percentile.
Tips for a BMI Percentile in Healthy Range
Experts recommend that kids of all ages and all weight categories follow these healthy guidelines to help keep weight in check. It's easy to remember them as 5-2-1-0 every day.
- 5: Everyone in your family needs five servings of vegetables and fruits. Keep serving them even if kids don't eat them. Familiarity increases the likelihood that they'll eventually try a food. Give a fruit or vegetable with every snack or meal.
- 2: Limit TV-watching to no more than two hours a day. Family members who use other "screens" -- video games or computers, for instance -- get less TV time. Experts also recommend not having TVs in bedrooms.
- 1: Get one hour of physical activity. Add up the minutes each family member is moving -- it should be 60 minutes or more. Start small and keep adding if necessary. The goal is to have all those minutes be at least moderate activity, sweating after about 10 minutes.
- 0: That's how many sugar-sweetened beverages you should have a day. Juice drinks such as lemonade and fruit punch, sodas, tea, and coffee can all have added sugar. Stick to water and reduced-fat milk instead.
Here are some other expert-recommended eating guidelines.
- Start each day with breakfast.
- Avoid eating fast food, and the temptations from eating out in general.
- Eat together as a family -- regularly.
- Check portion sizes, and serve your family accordingly.