Adolescents' Perceptions About Healthy and Sustainable Diets: A Qualitative School-Based Study in Portugal.

In this qualitative study, we explored Portuguese adolescents' perceptions of diet, sustainability, and health through six focus group discussions (FGDs). Fifty-five adolescents (10-18 years) participated. FGDs focused on sustainability in food choices and its health impact, with our primary interest in their perceptions. Results showed a limited comprehension of "sustainable/sustainability," especially among younger participants. Those aware of sustainability recognized its diverse aspects, including health, economic, and ecological domains. Some adolescents recognized the link between health and sustainability in their diets, emphasizing the need for food literacy. These findings emphasize the importance of public health and sustainable policies among Portuguese adolescents.