There is NO SELF CONTOL being taught.
Most likely the parents are MIA.
BTW, where is the kid getting the money to eat like a glutton? Parents? Hmmmm?
A lot of the times parents have issues also. A lot of times I’ve seen very caring parents frustrated because they aren’t in control of their own bodies, and upset because they know they are passing the problems down.
And of course there is always the genetic component. I’ve met several women in my life now that have hormonal and/or thyroid problems, and see their children growing in the same way.