Whole Foods doesn't carry any food containing transfats or artificial coloring. But that's the extent of its nutritional screening.
Just because you are in a Whole Foods, don't think that everything you see on the shelves is healthful.
Whole Foods Golden Rounds crackers, for instance, have slightly more calories and fat per serving than the Ritz crackers they imitate.
Of course, if Whole Foods didn't stock at least some junk food, you'd have to make a stop at another store - burning more gas to get your chips.