A systematic review of the effects of nutrition programmes in high schools.

Introduction/Objective: Obesity rates are reaching alarming levels. Adolescence is a critical period for the prevention of nutritional problems, as it is a time of development of one's own eating habits. These habits will persist into adulthood, so showing adolescents healthy lifestyle patterns is important. The ideal option would be through school-based nutrition intervention programmes. The main objective of this article is to investigate the effectiveness of intervention programmes based on nutritional knowledge and the behaviour of adolescents aged 11-19 years. Method: To carry out this systematic review we employed Scopus, PubMed, and Web of Science as databases and a search period that spanned the last 10 years, following the PRISMA statement. Subsequent to the search, 110 articles were found. Finally, 19 articles were selected for in-depth analysis after a thorough screening. Results: The results show that, in general, intervention programmes have improved the nutritional knowledge of high school students, which means an improvement in their eating behaviours. In addition, these programmes increase their levels of physical activity. However, gender differences are observed, with girls being more concerned about maintaining a balanced diet. Conclusion: In conclusion, schools are an ideal environment for developing programmes that interfere in adolescent eating behaviour. [ABSTRACT FROM AUTHOR]