Because BMI changes with age, doctors plot BMI measurements on standard gender-specific growth charts. Over several visits, the doctor is able to track your growth pattern. BMI is not a direct measure ...

The situation is more complex in children, where the BMI threshold of obesity varies with age and sex. The charts below show how the BMI obesity threshold changes with age for boys and girls.

Because BMI changes with age, doctors plot BMI measurements on standard gender-specific growth charts. Over several visits, the doctor is able to track your growth pattern. BMI is not a direct measure ...