Stress is one of the factors implicated in the onset and aggravation of acne: the numerous nerve cells surrounding the sebaceous gland, under the effect of stress, produce a substance that stimulates the production of sebum, the excess of which clogs pores and causes the appearance of pimples. As for diet, its role is not supported by solid scientific data, despite patients' accounts incriminating certain foods such as chocolate and cold meats. A possible role for dairy products and simple sugars, if consumed in excess, has recently been suggested, but remains to be confirmed.

For further information, we recommend that you consult :

- The MangerBouger.fr website
- The Santé Publique France website, and its nutrition and physical activity section
- The ANSES website (Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail), and its section on food and human nutrition.
- The French Nutrition Society website
- The report of the PNNS, Programme Nationale de Nutrition et Santé (2018-2023), which defines all nutritional recommendations.