New Study Links Heavy Daily Social Media Use to Higher Rates of Teen Anxiety and Depression
Spending extended hours scrolling through social media platforms is directly linked to increased feelings of anxiety, depression, and social disconnection among teenagers, according to a comprehensive study co-led by researchers at the University of Alberta. The findings, published in the Journal of Adolescence, offer a detailed look at how daily screen time impacts adolescent mental health over a one-year period, highlighting specific vulnerabilities among girls and gender-diverse youth.
Led by doctoral researcher Madelyn Curle and co-authored by Dr. Valerie Carson, a professor in the Faculty of Kinesiology, Sport, and Recreation, the research emphasizes the importance of tracking the same group of adolescents over time. This approach allows scientists to better understand how these digital habits develop and whether certain demographic groups face elevated risks, particularly given that transgender and gender-diverse youth often experience disproportionately poorer mental health outcomes.
Tracking Tens of Thousands of Teens
To capture an accurate picture of adolescent habits, the research team analyzed two massive cohorts of young people aged 12 to 18. The first group included more than 58,000 students during the 2021–22 school year, while the second involved nearly 45,000 teens in 2022–23. Furthermore, researchers tracked nearly 27,000 of the same individuals across consecutive years. The participant data was drawn from COMPASS, a large-scale surveillance initiative collecting health and lifestyle information from secondary schools across British Columbia, Alberta, Ontario, Prince Edward Island, and Quebec.
The study evaluated how much time adolescents spent scrolling through social media daily, tracking whether their usage escalated or declined over the course of a year. Simultaneously, researchers measured their self-reported levels of anxiety, depression, overall well-being, emotional regulation, and the quality of their interpersonal relationships.
The Toll of Every Extra Hour
The results revealed a clear dose-response relationship between screen time and psychological distress. Just one additional hour of daily social media use was associated with a 15% higher likelihood of moderate-to-severe depression. Furthermore, that extra hour correlated with a 12% to 13% increase in the probability of experiencing similar levels of anxiety.
“These percentages are meaningful considering how many youth currently use social media on a daily basis,” explains Madelyn Curle. Beyond anxiety and depression, higher volumes of social media engagement were consistently tied to reduced overall well-being, diminished emotional control, and a noticeable decline in the strength of personal friendships.
Girls Face the Heaviest Burden
While increased social media exposure was linked to deteriorating mental health across all demographics, the associations were most pronounced among girls. Previous scientific literature suggests several contributing factors for this disparity. Girls often utilize social media more intensively than their male peers, and heavy platform use frequently impacts girls’ body image perception, which can trigger depressive symptoms and other psychological concerns.
Interestingly, when researchers evaluated longitudinal changes—tracking how increases in social media use from one year to the next affected mental health—rising screen time predicted poorer psychological outcomes across all adolescents regardless of gender.
Policy Implications and Future Directions
The research team believes these findings carry significant weight for public policy aimed at protecting youth. Dr. Carson notes that the results lend support to legislative efforts, such as Canada’s proposed “Safe Social Media Act,” which aims to restrict platform usage for adolescents under the age of 16. Reducing daily screen time over an extended period may serve as an effective strategy for improving adolescent mental health.
However, researchers caution that future policies must be carefully balanced. Curle emphasizes that social media can offer genuine benefits, such as peer connection, identity exploration, and vital social support networks for LGBTQIA+ teens. Consequently, young people should be included in ongoing discussions to ensure that regulatory measures reduce online harms without stripping away positive community spaces.
Source: Medical Xpress
