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BackgroundThe Food Guide for the Brazilian Population relies on natural or minimally processed foods mainly of plant origin such as beans and rice with low oil, salt, and sugar content and limited consumption of ultraprocessed foods. Reduction of ultraprocessed foods improves diet quality and energy consumption. ObjectiveThe goal of this study is to evaluate the effectiveness of an intervention for the treatment of obesity in children, with counseling based on the Brazilian Food Guide plus control of total energy intake. MethodsA parallel, randomized clinical trial will include children aged 7 to 12 years. Randomization will be performed in blocks of 10 individuals using computer-generated random sequence numbers. Both the control and intervention groups will participate in 6 standardized educational activities based on the 10 steps of the Brazilian Food Guide. These activities will be conducted at the University Hospital Toy Library, located in the pediatric outpatient clinic. For the intervention group, in addition to the educational activities, an individualized food plan based on the nutritional recommendations of the Brazilian Society of Pediatrics will be prescribed and discussed with the mothers and fathers. The primary outcome of the study will be variations in body mass index, and secondary outcomes will include analysis of insulin resistance, blood pressure, body fat percentage, and waist and neck circumference. ResultsThis project was funded by the National Council for Scientific and Technological Development in December 2017 (grant no 408333/2017-0). Recruitment began in August 2018 and by September 2019, we had enrolled the 101 participants. In addition to the patients referred by the national system of regulation, recruitment was made by medical outpatient referral and external indication. This is an ongoing study. We expect the results to be published in November 2020. ConclusionsAt the end of the project, in case of a positive result, a protocol for the treatment of obesity based on the Brazilian Food Guide will be proposed to the Unified Health System. A successful method to reduce childhood obesity is expected. Trial RegistrationBrazilian Registry of Clinical Trials RBR-3st5sn; http://www.ensaiosclinicos.gov.br/rg/RBR-3st5sn International Registered Report Identifier (IRRID)DERR1-10.2196/16170

Previous studies have assessed the association between food consumption and bullying perpetration, but most of them have not broadly assessed food consumption, neither the distinction between forms of bullying. The aim of the study was to evaluate the association between dietary patterns with bullying roles and its different types of bullying perpetration among adolescents. Data on a representative sample of ninth-grade students (N = 2,163; mean age = 14.8 years) taken from Sao Paulo Project for the social development of children and adolescents (SP-PROSO) were used. The independent variables were healthy and unhealthy dietary patterns obtained by exploratory factor analysis. The dependent variables were bullying role (victim-only, bully-only, bully-victim) and bullying perpetration (any type, social exclusion, psychological/verbal aggression, physical aggression, property destruction, sexual harassment). Multinomial and logistic regression models were performed for the total sample and stratified by sex (only for association with sexual harassment), adjusting for covariates. Adolescents who engaged in a healthy dietary pattern were less likely to be bullies (RR 0.67 [0.49, 0.92]), while adolescents with an unhealthy dietary pattern were more likely to be bully-victims (RR 1.29 [1.12, 1.48]). Unhealthy dietary pattern was associated with any type of bullying perpetration (OR 1.24 [1.12, 1.38]), mainly with sexual harassment and physical aggression. Boys who had an unhealthy dietary pattern were more likely to sexually harass another adolescent (OR 2.10 [1.20, 3.66]). In conclusion, adolescents who had a healthy dietary pattern were less likely to perpetrate bullying. Unhealthy dietary pattern was associated with bullying perpetration, especially with sexual harassment by boys. [ABSTRACT FROM AUTHOR]

The role of contextual-level factors in bullying is still not clear, and evidence is mostly from high-income countries. Our objective was to investigate the association between community violence, disorder, school environment and bullying among school adolescents. We used data from a representative sample of 9th grade Brazilian adolescents (n = 2108) from the Sao Paulo Project for the social development of children and adolescents (SP - PROSO). Multilevel logistic regression models stratified by sex were used to assess the association between variables at student and school/neighbourhood level and bullying victimization or perpetration. For both sexes, we found that adolescents who perceived high violence between students and high school disorder were more likely to be bullies and victims. Boys who perceived high community violence and disorder in their neighbourhood were more likely to be bullies (OR3tertile = 2.73 CI95%: 1.57–4.74). Girls attending schools where the principal reported high community violence and disorder in the neighbourhood (ORhigh = 10.24 CI95%: 2.11–49.59) and inside the school (ORhigh = 6.83 CI95%: 1.48–31.56) were more likely to be bullies. Boys from schools whose principal perceived violence between students were less likely to be victims (ORhigh = 0.35 CI95%: 0.16–0.78) and bullies (ORhigh = 0.21 CI95%: 0.07–0.64). Girls attending schools with signs or posters about tolerance/gender equality and about violence were less (OR = 0.12 CI95%: 0.03–0.50) and more likely (OR = 25.88 CI95%: 4.28–156.63) to report being bullies, respectively. Community violence, disorder and school environment were associated with bullying victimization and perpetration among adolescents. Sex-specific associations should be further investigated. Prevention and management of school violence in adolescence should consider contextual-level characteristics. [ABSTRACT FROM AUTHOR]

Research focusing on the relationship between interpersonal violence and nutritional status in adolescence is scarce and has distinct results. The objective of this study is to investigate the association of family physical and sexual violence with inadequate nutritional status in Brazilian adolescents. We used data from the 2015 Brazilian National Survey of School Health. This study includes 11.850 students, older than 13 years, attending from sixth to ninth grade of elementary school and from the 1st to the 3rd year of high school. The exposures were family physical violence and rape. The outcome was nutritional status, assessed through body mass index. The association between exposures and outcome were investigated using a multinomial logistic regression model. These analyses were adjusted for demographic, socioeconomic, and family variables. The prevalence of family physical violence victimization was approximately 14% among adolescents for both sexes. The prevalence of rape was 4.6% and 5.7% among male and female adolescents, respectively. Family physical violence was not associated with being underweight, overweight, or obese, in either crude or adjusted models for both sexes. Sexual violence was inversely associated with being underweight only for male adolescents (OR: 0.21, CI 95%: 0.06–0.75). In female adolescents, sexual violence was associated with overweight/obesity (OR: 1.64, CI 95%:1.15–2.33). In this study, rape, but not family physical violence victimization, was associated with nutritional status in adolescents of both sexes. Nonetheless, this association was different between boys and girls. Rape was inversely associated with being underweight in male adolescents, whereas, in female adolescents, it was associated with excess body weight. [ABSTRACT FROM AUTHOR]

Studies have assessed inequalities in violence by economic status, but few studies have been done with adolescents from middle-income countries. Our objective was to analyze inequalities in verbal bullying, family physical violence, sexual violence, and fights with weapons among Brazilian adolescents in school according to wealth and stratified by sex and skin color. We used data from the Brazilian National Survey of School Health (Pesquisa Nacional de Saúde do Escolar [PeNSE]), carried out in 2015, with a representative sample of Brazilian adolescents attending ninth grade in public and private schools. We created a wealth index based on questions about access to goods and services through principal component analysis; this index was later divided into quintiles. We calculated the slope index of inequality (SII), the concentration index (CIX), and simple measures of inequality, such as ratio and difference. To identify statistically significant differences in sex and skin color inequality, we used the t test. We found high prevalence values of verbal bullying and family physical violence, 23.9% and 14.5%, respectively. In general, when comparing the types of violence according to SII and CIX, we observed a higher prevalence of violence among adolescents in the lower income quintiles, for both sexes and skin colors. We observed higher wealth inequality in sexual violence among girls (CIX = −14.89) when compared with boys (CIX = −4.63) (p =.001). We also observed higher wealth inequality in sexual violence among Whites (CIX = −15.55) when compared with Brown (CIX = −6.23) (p =.009). Wealth inequality aggravates the occurrence of violence among poorer Brazilian adolescents. Also, the identification of vulnerable groups may contribute to target public policies for fighting violence. [ABSTRACT FROM AUTHOR]

Few studies have evaluated the relationship between stressful events, such as child abuse and food consumption. Thus, the objective of this study is to assess whether family physical violence victimization is associated with food consumption in adolescents. We used data from the Brazilian National Adolescent School-based Health Survey, carried out in 2015, in a representative sample of 102,072 students attending ninth grade from public and private schools. We used Venn diagrams and logistic regression analysis to, respectively, graphically represent and evaluate the association between the consumption of ultra-processed food (soft drinks, sweets/candies, and salty biscuits, packaged snacks, or processed meat) and in natura food (beans, fruits and vegetables) with victimization from family physical violence. We found a lower consumption of in natura and higher consumption of ultra-processed foods among adolescent victims when compared with nonvictims of family physical violence. The probability of consuming 4 or more times a week increased by 44% for salty biscuits, packaged snacks, or processed meats; 38% for soft drinks; and 22% for sweets among adolescents who reported violence. On the contrary, the probability of consuming 4 or more times a week decreased by 25% for beans, 19% for vegetables, and 13% for fruits among adolescent victims of family physical violence. We conclude that family physical violence victimization is associated with high consumption of ultra-processed food and low consumption of in natura food among Brazilian adolescents. Therefore, issues related to violence in childhood and adolescence should be addressed in interventions aimed at altering food consumption and consequent prevention, control, and treatment of nutrition-related outcomes to increase their effectiveness. [ABSTRACT FROM AUTHOR]

The aim was to design culturally acceptable and healthy diets with reduced energetic share of ultra-processed foods (UPF%) at no cost increment and to evaluate the impact of the change in the UPF% on diet quality. Food consumption and price data were obtained from the Household Budget Survey (n 55 970 households) and National Dietary Survey (n 32 749 individuals). Linear programming models were performed to design diets in which the mean population UPF% was reduced up to 5 % with no cost increment relative to the observed costs. The models were isoenergetic or allowed the energy content to vary according to the UPF%, and they were not constrained to nutritional goals (nutrient-free models) or maximised the compliance with dietary recommendations (nutrient-constrained models). Constraints regarding food preference were introduced in the models to obtain culturally acceptable diets. The mean population UPF% was 23·8 %. The lowest UPF% attained was approximately 10 %. The optimised diet cost was up to 20 % cheaper than the observed cost, depending on the model and the income level. In the optimised diets, the reduction in the UPF% was followed by an increase in fruits, vegetables, beans, tubers, dairy products, nuts, fibre, K, Mg, vitamin A and vitamin C in the nutrient-constrained models, compared with the observed consumption in the population. There was little variation in most nutrients across the UPF% reduction. The UPF% reduction in the nutrient-free models impacted only trans-fat and added sugar content. UPF% reduction and increase in diet quality are possible at no cost increment. [ABSTRACT FROM AUTHOR]