There's a plethora of information available on the inter webs about whole foods, and as we all know, it doesn't take long to get lost in the detail.. Here is a very brief and simple summary on Whole Foods.
Whole foods are foods that are closest to their natural state, are unprocessed and unrefined, or only processed and refined minimally, ie dicing and freezing. Whole foods typically do not contain added salt, carbohydrates, or fat nor preservatives.
Examples of whole foods include unpolished grains, beans, fruits, vegetables, and animal products, including meats and non-homogenised dairy products.
Whole foods include unprocessed fruit and vegetables; wholegrains (millet, brown rice, oats, rye, wholewheat, buckwheat, and quinoa.); beans and legumes (including lentils, chickpeas and kidney beans); and nuts and seeds. Wholefoods of animal origin include eggs, small whole fish, seafood (including crustaceans), poultry and red meat such as beef, lamb, pork and veal.