Children are bombarded by television advertisements for unhealthy foods.  Marketers are very crafty about promoting unhealthy "food" and making it seem like it has health benefits.  Fruit roll-ups for example.  They look like so much fun, and are thought to provide a serving of fruit, but they are loaded with sugar, fake sugar, corn syrup and chemicals.  There is no comparison between that and say, a fresh apple.  NOT an apple that is sprayed with pesticide, picked while it is still green, ripened in a greenhouse, coated in wax, shipped across an ocean, trucked across the country…no, a freshly picked old fashioned apple, in the fall season, from a local farmer.  If your children know the good taste of fruit like that from an early age, then that is what their taste buds will want.