![]() ![]() The growth charts show the weight status categories used with children and teens (underweight, healthy weight, overweight, and obese). The percentile shows the relative position of the child’s BMI number among children of the same sex and age. Percentiles are the most commonly used indicator to assess the size and growth patterns of individual children in the United States. The BMI is not used by itself when evaluating possible obesity in children and teens. After BMI is calculated for children and teens, the BMI number is plotted on the Centers for Disease Control (CDC) BMI-for-age growth charts (for either girls or boys) to obtain a percentile ranking. BMI can be considered an alternative for direct measures of body fat and is an inexpensive and easy-to-perform method of screening for weight categories that may lead to health problems.įor children and teens, BMI calculated based on age and sex and is often called BMI-for-age. ![]() BMI does not measure body fat directly, but research has shown that BMI correlates to direct measures of body fat, such as underwater weighing and dual energy x-ray absorptiometry (DXA). BMI is a reliable indicator of body fat for most people. Cancer Clinical Trials Online Educationīody Mass Index (BMI) is a number calculated from a person’s weight and height.If you're suffering from an eating disorder, the BMI calculator results do not apply. Your can use your BMI result as a starting point for further discussion with your GP about your weight and your general health.įind out more in How your GP can help and check out the Change4Life website for practical tips on staying healthy as a family. However, the BMI is a relatively straightforward and convenient method of assessing someone's weight. adults who lose muscle as they get older may fall in the "healthy weight" range even though they may be carrying excess fat.very muscular adults and athletes may be classed "overweight" or "obese" even though their body fat is low.The adult BMI does not take into account age, gender or muscle mass. The BMI can't tell the difference between excess fat, muscle, or bone. Your BMI can tell you if you're carrying too much weight but it can't tell if you're carrying too much fat. ![]() If you're concerned about your child's weight, contact your GP who may be able to refer you to your local healthy lifestyle programme for children, young people and families. Measuring waist size is not routinely advised for children because it doesn't take their height into account. For example, a girl on the 75th centile is heavier than 75 out of 100 other girls her age. Find out more in very overweight childrenĪ child's BMI is expressed as a "centile" to show how their BMI compares to children who took part in national surveys. If you're concerned about your child's weight, see your GP. Get tips on how to encourage your child to be more active and eat well ![]()
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