Too Much Screen Time May Affect Children’s Health: What a New Study Reveals

A major study involving nearly 2.8 million children across 64 countries has found a link between increased screen time and poorer outcomes in children’s learning, language development, and emotional health. The findings highlight how excessive use of digital devices may be associated with several aspects of childhood development.

What Did the Study Find?

The research, conducted by scientists at the University of Calgary in Canada, reviewed decades of research on screen time and child development. Published in the journal 'JAMA Pediatrics', the study examined evidence involving children aged 18 and under.

Researchers found that greater screen exposure was associated with poorer academic achievement, weaker language development and difficulties with emotional regulation. Children with higher screen exposure also showed more behavioural and social difficulties.

The researchers noted that most of these associations were relatively small. However, they said even small associations may be important because screen use is now a regular part of children’s lives.

How Can Excessive Screen Time Affect Children?

Spending extended periods on digital devices may be associated with difficulties in several areas of development.

• Learning and academic performance: Greater screen exposure was associated with lower overall academic achievement. However, the study did not establish consistent effects on individual subjects such as mathematics, reading, and science.
• Language development: Higher screen use was associated with poorer language outcomes. Excessive time spent on devices may also reduce opportunities for face-to-face conversations, although the study does not establish this as the cause.
• Emotional and behavioural health: Researchers identified associations between increased screen exposure and difficulties with emotional regulation, behaviour and social relationships. Other research has also linked certain patterns of digital media use with anxiety and depressive symptoms.

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Does Screen Time Directly Cause Developmental Problems?

The researchers have emphasised that the findings show associations, not proof of cause and effect. It is possible that prolonged screen use contributes to developmental difficulties.

However, children who already experience learning or emotional difficulties may also spend more time using digital devices.

Experts have also cautioned against treating all screen activities as equally harmful. The available evidence does not allow firm conclusions about the effects of individual activities, such as gaming and social media, across all age groups.

How Can Parents Encourage Healthier Screen Habits?

Parents can help children develop a balanced relationship with digital devices through a few practical steps.

• Set reasonable limits: Establish clear rules about when and where children can use phones, tablets, and computers.
• Encourage outdoor activities: Make time for physical exercise, sports, reading, and imaginative play.
• Prioritise family interaction: Encourage conversations and shared activities without screens.
• Maintain a healthy sleep routine: Avoid allowing screen use to interfere with sufficient sleep.
• Monitor content: Pay attention to the type of content children access, not just the time they spend on devices.

These measures can help families establish healthier digital habits without treating all screen use as harmful.

Final Word

The study highlights an association between greater screen exposure and several less favourable childhood development outcomes. However, it does not prove that screen time directly causes these difficulties. A child’s age, family environment, individual needs and the type of digital activity all matter. A balanced approach that prioritises sleep, physical activity, learning and family interaction can help support children’s overall development.