Brain Checks Reveal Some Surprising Patterns in Teens Who Rely on Screens
Researchers say a huge NIH brain‑scanning project has flagged early thinning of the cortex in kids spending more than seven hours a day on smart devices and video games.
What the Initial Findings Say
- Nine‑ and ten‑year‑olds with heavy screen habits show premature cortical thinning, which might affect how they process sensory info.
- Those who use screens over two hours a day tend to score lower on language and reasoning tests.
- Scientists are still scratching their heads—“We don’t yet know if it’s a bad thing or if it’s caused by screen time,” admits Dr. Gaya Dowling.
Why It Matters Now
With 4,500 children in the study, the data could eventually explain whether too much screen time leads to addiction or other long‑term health effects. But the research is a marathon, not a sprint.
Insights from the Pediatric Circle
Dr. Dimitri Christakis, a key author of the American Academy of Pediatrics’ new guidelines, notes that we’re in the midst of a “natural, uncontrolled experiment” on the next generation. The Academy now recommends avoiding digital media for kids under 18–24 months, except for video chats.
What to Expect in 2019
Researchers plan to start releasing more data in early 2019, offering a clearer picture of what heavy screen habits do to young brains.
