I went to a meeting once. The people were insane. You're told to measure everything, count all calories, never eat out again, and to not ever eat any foods you truly enjoy, because you might overeat. I suppose if it's a true "food addiction," but generally it's emotional or psychological issues manifesting themselves as food addiction. Having formerly struggled with an eating disorder (as many of those at the meeting had too), this method was about the worst thing I could do for myself. By the way, I went to therapy to deal with the issues behind my eating, began to deal with stress/anxiety by exercising, lost 30 lbs, and am now at a perfectly healthy weight. I'm highly opposed to OA, as I didn't meet a single mentally healthy person at the meeting (several were quite underweight, and appeared to have developed anorexia, the other girl close to my size was bulimic). There are much healthier, effective ways to lose weight.