Perhaps, the New York Times has taken a step in the right direction regarding about the huge difference between real whole foods and processed and largely super-sized "unHappy" meals and how the latter can harm your health in this interesting piece written by Dr. Michael Pollan, Knight professor of journalism at the University of California, Berkeley.
At the heart of the confusion, Dr. Pollan says, is the usual unholy trio of entities that stand to gain a great deal, creating "a large gray fog" of confusion over which miracle diet of the moment "cures" a given health problem.
When in doubt, Dr. Pollan offers a simple rule of thumb for discerning which foods are better than others: Anytime you see a health claim -- adding, for example, omega-3 fats to breakfast cereals -- on a food "product," chances are overwhelmingly good that same processed food really isn't food at all.
Fact is, most foods should be eaten as close to raw as possible to maximize their healing properties and according to your body's unique nutritional type.
Also, I strongly recommend reviewing this page to help you find sources of whole foods in your community.