Your four-year-old swipes through apps with ease, but at what cost? That’s the question scientists worldwide have spent decades answering. Their verdict? Screen time reshapes children’s brains more dramatically than previously thought. Through advanced brain imaging and long-term studies, researchers have uncovered 27 significant ways screens change how young minds develop, learn, and behave. These findings aren’t meant to scare you. They’re meant to empower your family’s choices about technology.