I have tried following David's no fructose way, and unfortunately have not managed to lose any weight. Initially, I lost a couple of kilos but after about 6 months I fell off the wagon, and it took me about 12 months to get back on track with no weight loss success. Then I read Wheat Belly, and followed up with The Paleo Diet and The Paleo Answer by Loren Cordain Ph.D. I got serious about the no sugar, and no wheat and little carbs (pasta, rice, beans etc) and had some success with the weight loss. Then I decided to go total Paleo (no dairy either) according to Loren Cordain and I have now managed to drop a total of 10 kgs. I still have a meal here or there that has perhaps a potato, or some dressing on a salad that was obviously sugar laden, but I am still losing and not really struggling with it at all. I have learnt to make the odd sweet in a Paleo way to satisfy any yearning I may get for a biscuit or cake. It may not be for everyone, but it is working for me and I am liking the results with out really feeling deprived.