As smartphones, tablets and smart televisions become fixtures in homes across the world, experts are raising fresh concerns about the impact of screen exposure on young children’s brain development.
Health experts recommend that children aged between two and five years should spend no more than one hour a day on screens, while children under two should largely avoid screen use except for interactive activities such as video calls with family members.
The warning comes amid growing evidence that modern digital content is changing the way young children learn, interact and develop critical cognitive skills.
Researchers say the issue is no longer just about the amount of time children spend looking at screens. Instead, attention is increasingly being focused on what children are watching, how they are watching it, and whether parents are actively involved in the viewing experience.
According to Professor Sam Wass, a developmental neuroscientist at the University of East London, children’s screen habits have changed dramatically over the past two decades.
Unlike traditional children’s programming, today’s digital content often features rapid scene changes, fast-moving animations, constant visual stimulation and short-form videos designed to hold attention for extended periods.
Scientists are now studying whether such highly stimulating content may overwhelm developing brains that are still learning how to process information and regulate attention.
Experts caution that excessive screen exposure during early childhood has been linked to delayed language development, sleep disturbances, reduced attention spans and poorer social interaction skills.
The concern is particularly significant during the first five years of life, a period widely regarded as crucial for brain development. During this stage, children learn best through face-to-face conversations, physical play, exploration and interaction with caregivers.
Parents are advised to avoid screens during mealtimes and before bedtime, as well as to choose slow-paced, age-appropriate content whenever screens are used.
Experts also encourage parents to watch programmes together with their children and discuss what is happening on screen rather than allowing passive viewing.
There is also growing debate around the use of artificial intelligence-powered digital tools and toys for very young children, with specialists warning that technology should complement—not replace—human interaction.
While screens have become an unavoidable part of modern life, researchers maintain that the most effective way to support healthy brain development remains surprisingly simple: talking, reading, playing and spending quality time with children.
As scientists continue to study the long-term effects of digital media, one message remains clear: when it comes to children’s development, real-world experiences still matter most.
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