Hi again -
I just wanted to share the link for the article where the "eat food..." idea came from - I heard it in a speech about a year ago, and this finally gave me the incentive to look it up.
The article is a bit long, but the last bit (the numbered list) is a good concise guide that is easy to follow. The information in the long part is full of all kinds of good information, but, well, it's long!
here it is Unhappy Meals | Michael Pollan