Melanie Thomassian at Dietriffic thinks so. And maybe not just a treat meal but a treat day, once once a week. I’m sure she’s right, at least for some folks. In my books, I talk about “cheat meals” – same thing as a treat meal.
Visit Melanie’s blog for details.
On the other hand, if you’re seriously addicted to certain fattening foods, you might do better swearing them off permanently. For example, alcoholics should never temp themselves with a drink “just this once.”