A best-selling book detailing a trendy new diet made famous by the French is due out soon. Already, The Dukan Diet has sold more than 3 million copies worldwide, according to the Web site of Random House.
But some nutritionists have some concerns about the eating plan. In a nutshell, the diet's four steps include the "attack phase," the "cruise phase," the "consolidation phase" and the "stabilisation phase".
How the Dukan Diet works