Do you want to lose weight fast? If yes, then the Sirtfood Diet is the right diet for you Any diet plan you adopt involves some level of expense and inconvenience. It may also involve risk. Anyone can write a diet book, as there is no need to have the diet medically approved. That's one reason why all diets start by suggesting you consult a doctor. One thing you can do is look at the qualifications of the diet's author. The...