Weight loss programs that are high in fat and low in carbohydrates. It might be challenging for one to join a weight loss program.
It sounds like you are talking about things like The Atkins diet...particularly the older one. A diet that I have found works well is The Abs Diet. It is simple, well balanced, and includes a lot of healthy, fresh foods.
Ehm, maybe and i can said its working with many people. But not all people really like to join that weigh loss program. Maybe some of them have their own way and fast way to loss their weigh than join this program.