Introduction
Nowadays, almost everyone uses or comes into contact with digital devices daily. Technology has made our lives easier, faster, and more entertaining. However, despite its many benefits, excessive use of digital devices can also have harmful effects, especially on children. Researchers and parents have become increasingly concerned about how too much screen time may affect children’s physical health, mental development, and social behaviour.
What is excessive screen-time?
We use the term “excessive screen time” when people spend more time on digital devices than necessary. This includes the use of phones, tablets, laptops, televisions, and gaming consoles for entertainment, social media, and communication.
Although technology can be useful and educational, spending too much time in front of screens may negatively affect children’s physical and mental well-being. While moderate use of digital devices may support learning and relaxation, excessive screen exposure can negatively affect a child’s physical, mental, and emotional development. The effects often depend on the amount of time spent on screens and the type of content being consumed.
Physical health effects
Research and observations have shown that excessive screen time can lead to several physical health problems in children. Spending long periods in front of screens may cause dry eyes, headaches, poor posture, and pain in the neck, shoulders, and back. Excessive screen use is also associated with sleep problems, reduced physical activity, weight gain, and myopia, also known as short-sightedness. These health issues are becoming increasingly common as children spend more time using phones, tablets, computers, televisions, and gaming consoles.
Eye strain and myopia
Excessive screen time can cause eye strain and vision problems in children. Looking at screens for long periods may lead to dry eyes, headaches, blurry vision, and difficulty focusing. Researchers have also linked excessive screen exposure to myopia, also known as short-sightedness.
Sleep disruption
Using digital devices before bedtime can negatively affect children’s sleep. The blue light from screens may interfere with melatonin production, making it harder to fall asleep. Poor sleep can lead to tiredness, irritability, and difficulty concentrating during the day.
Poor posture and body pain
Spending too much time on screens can lead to poor posture and body pain. Many children sit in unhealthy positions while using phones, tablets, or computers, which may cause pain in the neck, shoulders, and back.
Obesity and lack of physical activity
Excessive screen use can reduce the amount of physical activity children get each day. Instead of playing outside or exercising, many children spend hours sitting while using digital devices. This sedentary lifestyle may increase the risk of weight gain and obesity.
Mental and Cognitive Effects
Excessive screen time may also affect children’s mental and cognitive development. Children who spend too much time on screens can develop shorter attention spans and may struggle to concentrate on schoolwork or other activities. Fast-paced digital content may overstimulate the brain, making it more difficult for children to focus on slower real-life tasks. Researchers have also suggested that excessive screen exposure may affect memory, learning ability, creativity, and language development, especially in younger children.
Social and Emotional Effects
In addition to physical and mental health problems, excessive screen time can also affect children socially and emotionally. Children who spend too much time on devices may interact less with family and friends in real life, which can weaken communication and social skills. Excessive screen exposure has also been linked to anxiety, irritability, loneliness, and mood swings. Social media may create pressure to compare oneself to others, which can negatively affect self-esteem and emotional well-being.
Are Screens Always Bad?
Although excessive screen time can have harmful effects, technology is not always negative. Moderate use of digital devices can support education, creativity, communication, and entertainment. Educational videos, learning applications, and online resources can help children develop useful skills when used responsibly. The main issue is not technology itself, but how much time children spend on screens and the type of content they consume. With proper limits and parental guidance, digital devices can be used in a healthier and more balanced way.
For further information on this topic, please refer to the external sources linked below.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10852174
https://pmc.ncbi.nlm.nih.gov/articles/PMC11658585
https://pmc.ncbi.nlm.nih.gov/articles/PMC5769928
https://www.cdc.gov/pcd/issues/2025/24_0537.htm
https://www.aao.org/eye-health/tips-prevention/screen-use-kids
https://www.mykidsvision.org/pl-PL/KnowledgeCentre/all-about-screen-time-and-close-work
https://www.schn.health.nsw.gov.au/kids-health-hub/screen-time/negative-health-effects-excessive-screen-time