Screen Time Increases Overweight and Obesity Risk Among Adolescents: A Systematic Review and Dose-Response Meta-Analysis Publisher Pubmed



Haghjoo P¹ ; Siri G² ; Soleimani E³ ; Farhangi MA⁴ ; Alesaeidi S⁵
Source: BMC Primary Care Published:2022

Abstract

Background: Adolescence is a critical period in human life, associated with reduced physical activity and increased sedentary behaviors. In this systematic review and dose-response meta-analysis, we evaluated the association between screen time and risk of overweight/obesity among adolescents. Methods: A systematic search in electronic databases, including PubMed, Embase, and Scopus was performed up to September 2021. All published studies evaluating the association between screen time and risk of overweight/obesity among adolescents were retrieved. Finally, a total of 44 eligible studies were included in the meta-analysis. Results: The results of the two-class meta-analysis showed that adolescents at the highest category of screen time were 1.27 times more likely to develop overweight/obesity (OR = 1.273; 95% CI = 1.166–1.390; P < 0.001; I-squared (variation in ES attributable to heterogeneity) = 82.1%). The results of subgrouping showed that continent and setting were the possible sources of heterogeneity. Moreover, no evidence of non-linear association between increased screen time and risk of overweight/obesity among adolescents was observed (P-nonlinearity = 0.311). Conclusion: For the first time, the current systematic review and meta-analysis revealed a positive association between screen time and overweight/obesity among adolescents without any dose-response evidence. Trial registration: The protocol of the current work has been registered in the PROSPERO system (Registration number: CRD42021233899). © 2022, The Author(s).