How Does Screen Time Impact Mental Health in Adolescents?
Introduction
Screen use among adolescents has grown rapidly, and so have concerns about what it's doing to their mental health. According to Santos et al. (2023), using devices on weekdays has been associated with diminished overall mental well-being. Adolescence already carries an increased risk for mental health problems, so it is important to monitor both how much time teens spend on screens and what they're consuming. Excluding schoolwork, media-related activities take up around six to nine hours of an American adolescent's day (Santos et al., 2023). That's a lot of time.
This systematic review aimed to highlight the effects of screen exposure on a wide range of mental health aspects in adolescents. These include conduct issues, disorders such as depression, psychosocial difficulties, life satisfaction, and more. The study contributes to our knowledge of how adolescents interact with screens and how increased exposure may affect their well-being.
Methods
Santos et al. (2023) followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), meaning the researchers gathered and analyzed existing articles published in the last ten years rather than collecting new data. The methodological quality of each study was determined using the Newcastle-Ottawa Scale. Four reviewers evaluated the studies in pairs, and a fifth reviewer resolved any discrepancies.
In total, fifty articles were reviewed, 38 cross-sectional and 12 longitudinal, covering 1,900,447 adolescents. Participants ranged from 10 to 21 years old, and screen time was mostly self-reported.

Results
The review found that different types of screen use were linked to mental health in different ways. Some studies reported participants watching television and associated this with higher scores for mood and anxiety disorders and greater impairment in mental well-being, while others found no association between watching TV and depressive symptoms. Still, the review found evidence that watching TV for two to four hours on school days was negatively associated with anxiety and self-esteem. Adolescents predominantly use smartphones during the week, and this was associated with diminished well-being. Social media also had a negative association with mental well-being and an increased risk for depression in girls. The review concludes that more detailed studies are needed to understand the motivations behind why adolescents engage with screen devices.
Why This Matters
These results are an important addition to the literature on well-being because adolescents are among the most impacted users of digital technology. The study provides significant evidence of how mental health is affected by the number of hours and the specific days spent on screens. If adolescents learn how excessive screen time may be affecting their own well-being, more of their time can go toward personal care activities, like spending time outside or doing something that doesn't involve a smartphone. Parents can use these findings to guide their children toward healthier habits, such as setting screen time limits and balancing school-related screen time with mental well-being. Overall, the study provides strong data on the link between screen time and adolescent mental health, and it encourages a societal shift toward healthier habits for long-term well-being.
Author:
Alicia Kim, Psychology Major, Emory University
Editor:
Rebekah Afework, Emory University
Article Reviewed
Santos, R. M., Mendes, C. G., Sen Bressani, G. Y., de Alcantara Ventura, S., de Almeida Nogueira, Y. J., de Miranda, D. M., & Romano-Silva, M. A. (2023). The associations between screen time and mental health in adolescents: A systematic review. BMC Psychology, 11(1). https://doi.org/10.1186/s40359-023-01166-7










