Whenever you get any new skill you really want to use it. I think he should lighten up a little.
Jacob's case was more a product of being a member of our culture. Jacob lives in America. He goes to public school where there's junk food available to purchase because of fundraisers.
Usually, the whole family's way of thinking needs to change. Kids are overweight for reasons. It's very seldom just one cause.
It went from his mom supervising him to Jacob forming his own ideas about nutrition.