Abstract
Objective: To describe, through clinical trials, the impact of screen time on child development. Methods: An integrative literature review was performed in PubMed and the Virtual Health Library (BVS) using the descriptors “screen time” AND “child development.” Original clinical trials published from 2018 to 2023, freely available in full text in English or Portuguese, were included. After applying eligibility criteria, 2 821 records were screened and 17 trials met inclusion criteria (6 from PubMed and 11 from BVS). Results: Excessive screen time was consistently associated with poorer cognitive performance, higher prevalence of inattention/ADHD symptoms, increased sedentary behavior, and elevated risk of overweight/obesity. Parent-focused guidance, school-based programs, and promotion of physical activity produced modest yet consistent reductions in screen exposure and improvements in physical and behavioral health indicators. Final considerations: There is consistent evidence that excessive screen use in childhood compromises cognitive and metabolic aspects. Multimodal strategies, such as limiting screen time, encouraging physical activity, and providing family education, are essential to mitigate these effects and foster healthy child development.
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