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Updated: Jan 19, 2026
01:27
Internal and External Users
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Associations Between Time Spent Using Social Media and Internalizing and Externalizing Problems Among US Youth
Kira E Riehm1, Kenneth A Feder1, Kayla N Tormohlen1
1Department of Mental Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland.
JAMA Psychiatry
|September 12, 2019
Summary
Adolescent social media use exceeding 3 hours daily is linked to increased internalizing and comorbid mental health problems. Limiting screen time and improving media literacy may mitigate these risks.
Area of Science:
- Adolescent mental health
- Social media impact
- Longitudinal cohort studies
Background:
- Social media use is a potential risk factor for adolescent mental health issues.
- Limited longitudinal research exists on this association, with no quantification of attributable mental health problems.
Purpose of the Study:
- To prospectively assess the association between daily social media time and internalizing/externalizing problems in adolescents.
- Investigate the dose-response relationship between social media exposure and mental health outcomes.
Main Methods:
- Longitudinal cohort study of 6595 US adolescents (Population Assessment of Tobacco and Health study).
- Data collected via audio computer-assisted self-interviewing across three waves (2013-2016).
- Assessed self-reported social media use (wave 2) and mental health problems (wave 3) using validated screeners.
Main Results:
- Increased social media use (>30 minutes/day) was associated with higher risks of internalizing and comorbid problems.
- Adjusted analyses showed significant associations between >3 hours/day of social media use and internalizing/comorbid problems.
- No consistent association was found with externalizing problems alone.
Conclusions:
- Adolescents using social media for over 3 hours daily face heightened risks for internalizing and comorbid mental health issues.
- Further research is needed on interventions like time limits, media literacy, and platform redesign to reduce mental health burdens.
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