However, after 12 months, people start to gain their weight back. French National Authority for Health suggests that physicians warn their patients against restrictive diets that can are the origin of weight's fluctuation can be health threatening. This weight regain is linked to numerous factors, mainly dietary compensation phenomenon tied to cravings (Lecerf, 2013. Obésité : pourquoi les regimes échouent-ils ? Nutr Clin Metab (in press)).