Maciel, Bruna Leal LimaAguirre, Maria de Jesus Xavier2024-05-152024-05-152023-12-15AGUIRRE, Maria de Jesus Xavier. Sobrepeso e obesidade em adolescentes: uma análise considerando redes sociais. Orientadora: Dra. Bruna Leal Lima Maciel. 2023. 112f. Tese (Doutorado em Ciências da Saúde) - Centro de Ciências da Saúde, Universidade Federal do Rio Grande do Norte, Natal, 2023.https://repositorio.ufrn.br/handle/123456789/58335Obesity is one of the health problems that grows the most throughout the world during adolescence, being a disease that is difficult to control, with multifactorial etiology. Understanding the social determinants and environmental conditions that lead to overweight and obesity in adolescence is essential for developing strategies for their control and treatment. Objective: To evaluate the association of food consumption habits, physical exercise and the influence of social relationships on overweight and obesity in adolescents. Methods: This thesis was developed through two studies: 1) a systematic review to evaluate the influence of social networks on food consumption habits and physical exercise practices and their relationship with overweight and obesity in adolescents aged 12 to 19 years; 2) a cross-sectional study with adolescents in a rural school in Rio Grande do Norte – RN. The systematic review was registered in PROSPERO and followed the PRISMA guidelines. Searches were carried out in the PubMed, Scopus, EMBASE, PsycINFO and Web of science databases for publications from 2009 to 2022. The methodological quality of the studies was assessed using the Newcastle-Ottawa scale and the Agency for Healthcare Research and Quality - AHRQ selection list. Grading of Recommendations Assessment, Development, and Evaluation - GRADE was used to assess the quality of the evidence. For the cross-sectional study, n = 90 students from a rural school in Ielmo Marinho - RN participated, who answered questionnaires about sociodemographic characteristics, food consumption, physical exercise and social networks. Social networks were built based on students’ social ties. Principal component analysis was performed to determine dietary patterns and logistic regression models were used to investigate variables associated with overweight/obesity. Results: For the systematic review, after screening, 7 studies were identified and carried out in countries in Europe, North America, the Chinese Republic, and the Oceanic continent. The age of the participants ranged from 12 to 18 years old, with females being the most prevalent. Of the studies found, 3 were cross-sectional and 4 longitudinal. Three studies found evidence that adolescents' weight was influenced by their friendship ties and that friends at school can influence their BMI and physical exercise. In these studies, it was found that the boys' networks were characterized by having a similar pattern of unhealthy food consumption; The girls' networks were similar in screen-based sedentary activities and it was also evident that everyone can influence and be influenced by the lunch sharing variable. Of the 7 studies included in the review, the GRADE assessment indicated a low to moderate level of evidence, low in 2 studies and moderate evidence in 5 studies. Therefore, clear evidence was not found in all studies, but it is important to highlight that there is no definitive evidence of this association. The results of the cross-sectional study showed that the majority of participants were girls (62.9%) and the proportion of overweight/obesity was 30% among adolescents. The students cited 2,070 people from their networks (family, friends at school, friends outside of school, and others). Among them, the family had the greatest degree of influence (61%) in the network and shared more meals with teenagers (47%). Adolescents' perception of the body size of their family members with obesity, compared to normal weight or underweight, was prevalent (51%). Adolescents with unhealthy eating patterns were 72% more likely to be classified as overweight/obese, and eigenvector centrality was also associated with overweight/obesity. Conclusion: This study showed the need to understand the different social networks shared by adolescents, as these are associated with their behaviors and habits, especially those closest to them, such as family and friends. There is also a need for greater depth to understand the influences that the structure and function of social networks have on health behaviors among adolescents who participate in different types of networks (family, school friends, friends outside of school, among others).Acesso AbertoObesidadeSobrepesoAdolescentesRedes sociaisConsumo alimentardoctoralThesisCNPQ::CIENCIAS DA SAUDE