Yep. Chocolate is a good one, but only dark chocolate is good for you. Coffee is another good one. The syrup in soda is bad. Red meat, dairy(PETA actually claims a link between autism and cow's milk), sugar, salt. Tea was bad, now it's good again, but only green tea. Too much of one vegetable is bad, while overeating on another is good. They even changed to food pyramid to add fat. But only certain fats.
I gave up long ago on dietitians. I figured my body knew what was good for it and would let me know what wasn't.