Whole Foods Cookbook: Natural Foods for a Whole Foods Diet The Whole Foods Cookbook contains enough whole food recipes to plan the menu for a couple of weeks. Whole foods are highly nutritious because the foods have not been processed. Processing foods pulls out the vital vitamins and minerals that our bodies need. By eating whole foods, we are consuming all the vital nutrients we need to build a strong and healthy immune system. A strong immune system is able to fight off germs better helping us to stay well. Eating whole foods also helps to treat and even cure some health conditions.