[Acne and diet].

The classical opinion of dermatologists on the absence of a dietary effect on acne is challenged by the discovery of so-called primary populations with no acne and by the demonstration of a possible role played by dairy products in the diet of adolescents. The role played by IGF1 as the effector of these dietary effects has a number of elements of proof. From a practical point of view, however, it is too early to provide particular advice to patients other than eating a balanced diet.