Many parents worry about their children's weight. They may worry that their children are overweight and on the path to developing health problems in adulthood. Or, they may worry that their children are too thin because they are undernourished. Parents trying to assess their children's health should keep in mind that the correct weight for height in children depends on factors such as age, gender and genetics.
BMI
You can use the body mass index, or BMI, as a guide to determine the correct weight for height in children. BMI is a number that considers an individual's height and weight. According to the Centers for Disease Control and Prevention, BMI is an estimate of body fat. To calculate a child's BMI, divide the weight in pounds by the square of the height in inches. Multiply this number by 703.
Growth Charts
For adults, the BMI number defines underweight, normal weight, overweight and obesity. However, the CDC defines weight status in children according to growth charts that plot BMI versus age. These growth charts are for children and adolescents ages 2 through 20 years old and there are separate charts for boys and girls. A BMI for age between the fifth and 85th percentile is in the healthy weight status category, and underweight is having a BMI for age less than the fifth percentile. A BMI for age between the 85th and 95th percentile is overweight and a BMI greater than the 95th percentile is obese.
Stage of Development
The BMI for age growth charts can suggest the correct weight for height in children because they include important considerations like age and gender. However, they do not factor in pubertal stage, which can influence the correct weight for height. According to KidsHealth from Nemours, the growth spurt includes gaining muscle, fat and bone. Children may hit puberty at the age of anywhere from 8 to 14 years. This means that children with the same age and height may each have a very different individual healthy weight.
Overweight
Children who are overweight or obese are at higher risk for developing health conditions including diabetes, sleep disorders, bone and joint disorders and asthma. KidsHealth reports that obesity in children also may lead to mental challenges including depression, eating disorders or substance abuse. Being underweight can make children feel uncomfortable and awkward. They may experience teasing and try to gain weight by eating unhealthy foods. Because of these health implications, the correct weight for height in children is an important issue.
Dieting
If your children are overweight or obese, you might be wondering whether they should diet to achieve a healthy weight. KidsHealth states that unlike for obese adults who should lose weight, goals for obese children might be to slow down weight gain or to maintain weight. If you decide that your children should diet, keep the focus on healthy food choices to get a balanced diet. If your child's weight concerns you, you should consult your child's doctor to determine the best course of action.
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