Which is the better option? I don't know how slimming world works. To me if you want to lose weight a calorie deficit is required. I did a salad that worked out at 500 calories.... however slimming world would have said it was all free so could eat as much as I wanted! I don't understand how slimming world works being able to eat as much as you like. How does it work in the long run? Does the weight come off quicker with slimming world? Which approach would be better for long term benefits?