The Dukan diet is a protein-based diet designed by French nutritionist and dietician, Pierre Dukan. The diet is based on a list of over 100 allowed foods, as well as four specific ground pillars also known as phases: attack, cruise, consolidation, and stabilization.

The attack phase is designed to enable dieters to rapidly lose 2 to 3 kilograms. The cruise phase is designed to allow dieters to more gradually achieve the weight they aim. The consolidation phase is designed to help in preventing any future massive weight gain. And in the stabilisation phase, dieters can essentially eat whatever they want without gaining weight by following a few rules.