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Higher screen time linked to brain abnormalities and ADHD symptoms in children, study shows
Key Excerpts from Article on Website of US Right to Know
Posted: December 16th, 2025
https://usrtk.org/healthwire/screen-time-linked-to-brain-abn...
Children who spend more time on mobile phones, TVs, and video games may face a higher risk of developing attention problems as they grow, according to a first-of-its kind, large-scale study. The findings, recently published in Translational Psychiatry ... indicate a link between longer screen time and more severe symptoms of attention-deficit/hyperactivity disorder (ADHD). Researchers ... also found measurable, though subtle, brain abnormalities among heavy screen users. Longer screen time at ages 9–10 predicted higher ADHD symptoms two years later. Higher screen time was linked to a smaller cortex, the outer layer of the brain responsible for higher-level thinking and attention. Children with more screen time at the outset had a smaller right putamen, a region involved in language learning, addiction, and reward processing. Heavier screen use after two years was tied to slightly thinner development in three other cortical regions that support important cognitive functions, such as attention, working memory, and language processing. Screen use has increased worldwide among children and adolescents, with more than one-third of U.S. parents of a child under 12 reporting their children began interacting with a smartphone before the age of 5. While digital devices are promoted as essential tools for school and social connection, their excessive use has been tied to disrupted sleep, reduced physical activity and negative impacts on mental health.
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