This problem started to develop in the 20th century, when the fast food started. One hamburger of Mcdonalds has all the calories you need for one day. Today mothers didn't like to cook so they buy fast food (pizza, hamburgers, nuggets, etc) to their children.
In my opinion, the solution is teaching the people as in Chile with the campaing "Elige Vivir Sano", the ex first lady of chile create this campaign to reduce the obecity in chile, they teach to the children what food is healthy, all countries should do the same thing to reduce the obecity.
