How can eating habits be changed for kids who get "enough" food, but do not get adequate nutrition?

The advent of fast food has been one major reason, as well
as the availability and cheap prices of a lot of the processed foods.  These foods are
high in saturated fat, cholesterol, salt and calories, but do not have a lot of
nutritional value.  The more often children eat these kinds of foods, the heavier they
are going to be, earlier in life, and the more likely they are to have poor eating
habits when they are older.  We are seeing a huge increase in childhood obesity rates
and Type 2 Diabetes as a result of these trends.

Education
of young people using modeling as a method is pretty rare.  Most kids can't give
detailed answers about nutrition or what a balanced meal is, or the difference between
carbs and fat.  Kids get way too much sugar and caffeine in the forms of soda and sugary
energy and coffee drinks that have little, if any, nutritional
value.