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Aaron E. Carroll is a professor of pediatrics at Indiana University School of Medicine. He blogs on health research and policy at The Incidental Economist.

He also writes for The Upshot and recently wrote: “Over the past few months, I’ve written a number of times on how nutrition recommendations are seldom supported by science.”

Now Carroll decided to let us in on his own rules. You can see all of them on his post, but he begins with some of our favorites:

• Get as much of your nutrition as possible from a variety of completely unprocessed foods.
• Eat lightly processed foods less often.
• Eat heavily processed foods even less often.

Of course, Carroll also points us to Michael Pollan, whose litany of important books, articles, shows, speeches and seminars on the topic are well know — as is his mantra: “Eat food. Not too much. Mostly plants.”

And there's this: A terrific New York Times slide series from 2009. The first slide begins: