I dont know......my situation with the bars is completely different. I feel completely satisfied after one, and have never felt the need to have any more.
I have one for lunch everyday, with a black coffee. I now only buy the peanut crunch, yummy, I look forward to it everyday, its like a treat. I think you should just see how your body reacts to them, if you find them moreish, limit yourself to a couple a week. If they have nothing of that effect, have one a day!