Screens are everywhere! Whether your kids are at school, at home, or reaching into their pockets, there’s probably a screen nearby. Maybe your kids are begging you for a phone, or maybe you’re already monitoring their screen use. Either way, it’s natural to wonder how much screen time is too much.
A 2021 study by Common Sense Media found that U.S. teens (ages 13-18) spend an average of 8 hours and 39 minutes per day on entertainment screen media (screen use outside of schoolwork), while kids ages 8-12 spend an average of 5 hours and 33 minutes per day.
We put together this blog post to help parents understand how screen time can impact kids in a variety of ways:
Physical health
High levels of screen use are associated with lower physical activity. A 2023 study in the National Library of Medicine looked at kids’ rising use of screens during the COVID-19 pandemic from March 2020 to January 2022.
The study found that more sedentary time in front of phones, tablets, TVs, and computers led to less time moving, exercising, and playing outside. It makes sense, since the more time kids spend on a screen, the less time they have to spend running around or being active!
More surprisingly, screen use was also linked to less healthy eating habits. Kids who spent more time on screens were more likely to consume sweets, skip fruits and vegetables, and develop other poor dietary habits. These patterns suggest that excessive screen time can affect overall lifestyle habits.
Sleep
Screen use can also interfere with sleep. A 2025 study from the U.S. Centers for Disease Control and Prevention found that teens who spend more than 4 hours a day on screens are more likely to have irregular sleep routines and feel unrested.
Electronic screens emit blue light, which can trick the brain into thinking it’s still daytime, delaying sleep onset and reducing sleep quality. Even with the blue setting turned off on your phone, the late-night scrolling, videos, and notifications can still keep you up, so the best solution is still no phones before bed!
A 2022 study found that having devices in the bedroom is linked to shorter sleep duration, later bedtimes, and poorer sleep quality. Many studies show that screen use, especially right before bed, is associated with reduced total sleep time, highlighting the importance of managing screen use at night.
Academic performance
Excessive screen use is linked to challenges in learning and academic performance. According to a 2021 study from the American College of Pediatricians, high levels of recreational screen time are associated with attention deficits, lower grades, and reduced classroom engagement.
Heavy screen use can also weaken self-regulation skills, which include the ability to stay focused and resist distractions. In order to learn and be successful, students need to be able to focus on their schoolwork without getting distracted by phones or other forms of entertainment!
Social media and other digital platforms are designed to hold users’ attention through likes, notifications, and endless scrolling, tapping into the brain’s dopamine-driven reward system. Over time, this makes stopping screen use more difficult and increases compulsive use.
A 2023 study scanned kids’ brains to look at the brain network that helps with self-control, decision-making, and resisting impulses. Kids with higher screen time showed weaker connections in this self-control network, leading to less ability to regulate impulses.
Mental health
Reviews of multiple studies show that excessive screen time is associated with increased anxiety and depression and lower psychological well-being. Other research found that youth who spend 7 or more hours a day on screens are more than twice as likely to have been diagnosed with depression or anxiety compared to youth who use screens for about an hour a day.
Online environments can worsen stress through exposure to idealized images of friends, classmates, and influencers, which fuels social comparison and leads to body image concerns and lower self-esteem. Cyberbullying and online harassment can add another layer of stress for kids and teens.
To learn more about how social media use can lead to self-esteem issues and what you can do to combat it, check out our blog post: Don’t Let Social Media Crush Your Self-Esteem: 5 Things All Girls Should Know.
Other effects of excessive screen use, such as poor sleep and unhealthy lifestyle habits, also worsen mental health and emotional well-being, compounding the negative impact of screen time. Essentially, developing one problem because of screen time can lead to even more problems!
How much screen time is too much?
The World Health Organization recommends that infants and 1-year-olds have no screen use at all, although the American Academy of Pediatrics makes an exception for video chatting, so don’t worry about kids not being able to talk to distant friends and relatives!
For children ages 2 to 5, sedentary screen time should be limited to no more than 1 hour per day, but less is even better. For older children and teens, the WHO does not specify a strict limit, instead emphasizing healthy habits, such as sufficient sleep, regular physical activity, and balanced daily routines.
In general, research often defines excessive screen use as more than 2 hours per day for younger children and more than 4 hours per day for older children and teens.
A 2025 study from BioMed Central shows that reducing screen time can have immediate benefits. College students who cut their smartphone use to 2 hours a day or less for just 3 weeks reported significant improvements in well-being, sleep quality, stress, and depressive symptoms. Even small reductions in daily screen time can make a noticeable difference in health, mood, and sleep.
Is all screen time bad?
Not all screen time is harmful! A 2021 Common Sense Media survey found that young people often utilize screen media for connection, support, inspiration, and access to information. They report that screens have helped them feel less alone, stay connected to friends and family, get advice, and find community.
The issue is balance and how screens are used. Passive activities, like endlessly scrolling on social media, are more strongly linked to negative outcomes than active uses, such as creative projects, education, or video calls with friends and family.
Rather than eliminate screens entirely, we can help kids develop healthy, balanced habits that support their physical, emotional, and academic well-being.
Want to give your kids something fun and educational to do to get them off screens? Check out our collection of Printable Activities!
Screens are part of everyday life, but too much screen time can affect sleep, health, and mood. Instead of banning screens, we can encourage healthy habits and support active, engaged, and meaningful screen use. With thoughtful guidance, screens can be a tool for learning, creativity, and connection, not a source of stress or harm!
