How is obesity in children typically measured during well-child visits?

Obesity in children is primarily assessed through the calculation of Body Mass Index (BMI) and the use of growth charts. BMI is a numerical value derived from a child's weight and height, providing a standardized method to categorize children as underweight, healthy weight, overweight, or obese based on age and sex. Growth charts allow healthcare providers to compare a child's BMI against a population norm, helping to visualize the child's growth pattern over time in relation to their peers.

This method is preferred because it provides a comprehensive view of the child's growth and health status, rather than relying on a single measurement or parental perceptions, which can be subjective. Additionally, measuring waist circumference or using skinfold thickness can be useful in certain contexts, but these methods alone do not provide as complete an assessment as BMI combined with growth charts. By relying on BMI calculations alongside growth charts, healthcare providers can identify potential obesity and related health risks early, allowing for timely interventions.