The Flat-Belly Cure doesn’t work, because it doesn’t limit calories enough, so you don’t lose weight fast enough and consistently enough, to stay on the diet. The Dukan Diet doesn’t work, because it allows you to eat as much lean protein as you want. Excess protein you eat is converted by gluconeogenesis to glucose, which provides alpha glycerol phosphate for fat storage. So when you over eat protein, you over-store fat. The Atkins Diet doesn’t work, because it allows you to eat as much protein and fat as you want. All weight loss on Atkins is the in first 2 months, then you just weight cycle. You can be on Atkins for 10 years, and the bet is the only weight you will lose, will be in the first 60 days. Protein Power and South Beach also don’t work for the same reason, you can’t freely feed on protein and fat.