Great guidelines here. Full article.
Pollan’s nine principles of healthy eating:
1. Eat food… Don’t eat anything your great-great-grandmother wouldn’t recognize as food.
2. Avoid even those food products that come bearing health claims. Don’t forget that margarine, one of the first industrial foods to claim that it was healthier than the traditional food it replaced, turned out to give people heart attacks.
3. Especially avoid food products containing ingredients that are a) unfamiliar, b) unpronounceable c) more than five in number – or that contain high-fructose corn syrup. None of these characteristics are necessarily harmful in and of themselves, but all of them are reliable markers for foods that have been highly processed.
4. Get out of the supermarket whenever possible. You won’t find any high-fructose corn syrup at the farmer’s market; you also won’t find food harvested long ago and far away. What you will find are fresh whole foods picked at the peak of nutritional quality. Precisely the kind of food your great-great-grandmother would have recognized as food.
5. Pay more, eat less. There’s no escaping the fact that better food – measured by taste or nutritional quality (which often correspond) – costs more, because it has been grown or raised less intensively and with more care.
6. Eat mostly plants, especially leaves … By eating a plant-based diet, you’ll be consuming far fewer calories, since plant foods (except seeds) are typically less” energy dense” than the other things you might eat.
7. Eat more like the French. Or the Japanese. Or the Italians. Or the Greeks. Confounding factors aside, people who eat according to the rules of a traditional food culture are generally healthier than we are. Any traditional diet will do: if it weren’t a healthy diet, the people who follow it wouldn’t still be around.
8. Cook. And if you can, plant a garden. The culture of the kitchen, as embodied in those enduring traditions we call cuisines, contains more wisdom about diet and health than you are apt to find in any nutrition journal. Plus, the food you grow yourself contributes to your health long before you sit down to eat it.
9. Eat like an omnivore. Try to add new species, not just new foods, to your diet. The greater the diversity of species you eat, the more likely you are to cover all your nutritional bases.