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School Type, Eating Habits, and Screen Time are Associated With Ultra-Processed Food Consumption Among Brazilian Adolescents

Published:January 28, 2021DOI:https://doi.org/10.1016/j.jand.2020.12.010

      Abstract

      Background

      The increasing consumption of ultra-processed foods (UPFs) may be a result of the environmental influences to which adolescents are exposed and/or habits acquired since childhood through family interactions.

      Objective

      Our aim was to investigate whether type of school administration (public or private), eating habits, and screen time are associated with the percentage caloric contribution of UPFs to total kilocalories consumed by Brazilian adolescents.

      Design

      A cross-sectional secondary analysis of the Study of Cardiovascular Risk in Adolescents (ERICA) performed between March 2013 and December 2014.

      Participants/setting

      Overall, 71,553 adolescents from 1,247 public and private schools in 124 Brazilian cities (with a population of more than 100,000) were included.

      Main outcome measures

      We measured the percentage caloric contribution of UPFs to the total kilocalories consumed, obtained using one 24-hour food recall.

      Statistical analyses performed

      Generalized linear models were used, guided by the hierarchical model. Sample complexity was considered using the Stata svy command, with a significance level of 5%.

      Results

      Overall, UPFs contributed an average of 28% (95% CI, 27.80%-28.15%) of total energy intake. Based on the final multivariate analysis, a significantly higher UPF diet was observed among adolescents from private schools (P < .001), those who do not consume meals offered by schools (P < .001), those who do not eat breakfast regularly (P < .05), those who eat in front of screens almost every day or every day (P < .001), and those who spend more time in front of screens (P < .001).

      Conclusions

      The findings of this study indicate that UPF consumption is associated with school type, eating habits, and screen time among Brazilian adolescents.

      Keywords

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      Biography

      L. L. Rocha is a Master in the Pediatrics Department, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.

      Biography

      L. H. Almeida Gratão is a PhD student in Child and Adolescent Health, Medicine School of Universidade Federal de Minas Gerais, Minas Gerais, Brazil.

      Biography

      A. Silva do Carmo is a PhD in the Ministry of Health, Brasília, Brazil.

      Biography

      A. B. Pereira Costa is a PhD student in Public Health, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.

      Biography

      C. de Freitas Cunha is a full professor, Department of Pediatrics, Faculty of Medicine, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.

      Biography

      T. Resende Prado Rangel de Oliveira is an adjunct professor in the Nutrition Course, Pontifícia Universidade Católica de Minas Gerais, Minas Gerais, Brazil.

      Biography

      L. Loures Mendes is an adjunct professor, Department of Nutrition, School of Nursing, Universidade Federal de Minas Gerais, Minas Gerais, Brazil.