to be completely honest, i have spoken to a nutritionalist about it and she reckons that meal replacement shakes like TF, are one of the worst things you can do to your body. she said that your body simply shuts down and stores any fat that it can get its hands on and you end up in a vicious dieting cycle. she recommended to me that one of the best 'diets', if you want to do an actual 'diet' is the CSIRO one. other than that, the best thing to do is just to make healthy choices in your eating with lots of fresh fruit and vegetables. you are much better off having a wholemeal salad sandwhich for lunch than a diet shake.