Low carb diets such as Atkins have been proven to be effective in helping people to lose weight. But there's a big problem with them, most people have a very hard time sticking to them over the long term and find them very difficult to follow.
The Day Off Diet takes some of the concepts of low carb diets and improves upon them, making the diet not only easier to follow but also more effective. The diet is largely based around the "Green Light" foods which are "slow" carb based (that's different than low carb!) These green light foods cause your body to "turn off the fat storing gene" which causes people to gain fat in the first place. They also keep the dieter feeling full so that they do not over consume calories. Perhaps most importantly to many dieters, this system frees the dieter from keeping logs of what they eat. There is no carb counting & no calorie counting with The Day Off Diet.
It also improves upon the low carb diet method with the "day off" that gives the diet it's name. This diet requires you to take a "day off" from dieting every 7th day. On this day you can eat and drink anything you want. Besides the obvious psychological advantages of being able to regularly satisfy all of your cravings and being able to enjoy your Saturdays fully (Saturday is day most choost as their day off) there's also the great weight loss advantage of keeping your metabolism boosted. Both low calorie diets like Weight Watchers and low carb diets such as Atkins cause the body to eat a low amount of calories on a regular basis and this makes the body go into "starvation mode" which slows down the metabolism and makes it harder to lose weight. The weekly "calorie spike" of The Day Off Diet keeps that from happening and makes it a more effective diet.