When the course is predestined yet produces no answers and won't change, then it goes round and round in circles, calling something old, new because it comes from another source or angle though the message is the same.
Fat humans, in this case children struggle to control themselves.
Not sure why obeying the pointless instructions of adults is seen as a measure of self control, it seems to be more a measure of obedience. Or even why you are supposed to control impulses, they are there to respond to surely. Not doing so can encourage them to get stronger and if that persists it can develop a momentum of its own and become an imbalance in itself.
And as there are differences in weight between races, markedly so;
That percentage is almost doubled among American-Indian children, 31% of whom are obese.