The tobacco campaign may have worked, this can’t be compared to food and wight gain!!!! Unlike discussed in this article.
You can survive without smoking but you have to eat.
So one needs to find control surrounding this. I strongly believe it comes form within the family. Yes the convenience food is advertized everywhere, but it is up to education and the will to want to eat differently to control ones weight.
It’s not complicated guys. Look at the basic level of origin, the family.