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Shocking new MRI study on 3–5 year olds: Just 2 hours of interactive screen time per day is linked to measurable loss of white matter in the brain. Professor Mike Nagel (University of the Sunshine Coast): “White matter is myelin — it insulates axons like plastic on a wire. Deficits in myelin early in life mean deficits in neural connectivity.” The more screen time, the greater the white matter loss — especially in areas tied to language development and literacy. Nagel’s first reaction (as a researcher and father): “Wow… I was not anticipating seeing anything like that. It hadn’t occurred to me that something as little as two hours a day was having such a profound effect.” Parents: Has this changed how you think about screen time limits for young kids — or do you think the risks are overstated?