Given the significant impact of diet on human health and its role in the primary and secondary prevention of many diseases, interventions aimed at modifying dietary behavior are increasingly considered as medical interventions. In this context, clinicians need more education and training on the appropriateness and use of these interventions, including the prescription of therapeutic meals. Both in-office counselling, for example with a dietician, and structural public health measures improve dietary behaviours. These coordinated clinical and community actions are important to reverse the unbalanced dietary trends observed in national surveys in Switzerland.