the gist of this book, as he said in a recent Stephen Colbert interview, is that the biggest factor in the health of your diet is who cooks your food, a corporation or a person you know.
Just stay away from the chemical-filled ultra-processed imitation food from Nabisco, General Mills, Nestle, Hershey, Kraft, Pepsi, Coke, Hormel, Tyson, ConAgra, etc. And big chain restaurants. If it's advertized on TV you probably don't want to eat it.
"Relying upon corporations to process our food means we consume large quantities of fat, sugar, and salt; disrupt an essential link to the natural world; and weaken our relationships with family and friends. In fact, Cooked argues, taking back control of cooking may be the single most important step anyone can take to help make the American food system healthier and more sustainable. Reclaiming cooking as an act of enjoyment and self-reliance, learning to perform the magic of these everyday transformations, opens the door to a more nourishing life." http://michaelpollan.com/books/cooked/