I am sure you have heard of the Atikins diet, south beach diet, Sonoma diet, no carb or high carb diet. They are all pretty much the same.
They are fads because they take a simple idea of natural weight loss and make it complicated with lots of rules and turn it into the greatest latest fad.
If you are really serious about losing weight then you need to implement real natural weight loss strategies that have been used for thousands of years by millions of people.