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The association between screen time and genetic risks for neurodevelopmental disorders in children
Nagahide Takahashi1, Kenji J Tsuchiya2, Akemi Okumura2
1Department of Child and Adolescent Psychiatry, Nagoya University Graduate School of Medicine, Japan; Research Center for Child Mental Development, Hamamatsu University School of Medicine, Japan; United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Japan.
Longer screen time in infants may not cause autism spectrum disorder (ASD) or ADHD, but could be an early indicator of these neurodevelopmental disorders (NDDs). Research links genetic risk for ASD with longer screen time and ADHD with increased screen time over time.
Area of Science:
- Neurodevelopmental disorders
- Pediatric medicine
- Child psychology
Background:
- The relationship between infant screen time and neurodevelopmental disorders (NDDs) like autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder (ADHD) is debated.
- No established causal link exists between screen time and NDDs.
Purpose of the Study:
- To investigate the association between screen time and the genetic risk of NDDs in early childhood.
- To determine if screen time is a cause or an early sign of NDDs.
Main Methods:
- Utilized longitudinal cohort data.
- Analyzed children aged 24 to 40 months.
- Examined associations between genetic risk for ASD/ADHD and screen time patterns.
Main Results:
- Genetic risk for ASD was associated with longer screen time in children 24-40 months.
- Genetic risk for ADHD was associated with an increase in screen time over time.
- No causal link was established, suggesting screen time may be an early sign.
Conclusions:
- Prolonged screen time in infancy may not cause NDDs.
- Screen time could be an early behavioral marker for NDDs.
- Further research is needed to understand the complex interplay between screen time and neurodevelopment.
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