Food in America is about as diverse as its people.
The variety of foods available at your local grocery store is virtually unlimited, yet many Americans do not choose to consume foods that really meet their needs.
Food is what you eat and nutrition is how your body makes use of the food that you eat. Simply eating until you're full does not mean that your body is receiving all the food that is needed.
Its not the amount of food that is important; rather, its the right variety and mixture of foods.