The best way to lose weight is to burn calories  more than what you consume, all these diets are fads like atkins and shouth beach.  What you need is to eat less calories than usual with plenty of excercise. First, do a test with a professional on how much calories you burn a day for doing nothing and eat less accordingly.  Furthermore, add an excercise routine that will help you even burn more. The more you burn the more you lose.