Culture & Society
An Australian decade-long study finds that adolescents spending two or more hours daily on social media face increased risks of depression and mental health decline.

An extensive Australian study has revealed a connection between prolonged social media use among teenagers and a decline in their mental health, including heightened symptoms of depression, particularly during early adolescence. This research stands out due to its decade-long follow-up, providing more scientifically robust findings compared to shorter-term studies.
The study was conducted by a team at the Murdoch Children's Research Institute, tracking approximately 1,200 children and young people in Melbourne from age nine to nineteen. Findings indicated that adolescents who spent two or more hours per day on social media were more likely to experience worsening mental health and depressive symptoms after one year, relative to peers who used these platforms for less than an hour daily.
While the research did not establish a direct causal link between social media use and mental health problems, the association was notably clear, especially among girls aged 12 to 13. Researchers described this age range as a sensitive period requiring early intervention and increased awareness, given its overlap with the rising influence of smartphones, peer pressure, and psychological changes inherent in adolescence.
The investigators emphasized that heavy social media use may increase exposure to cyberbullying, harmful content, and ongoing social comparison. These factors can negatively impact sleep quality, self-esteem, and psychological stability. Conversely, they acknowledged that social media is not universally harmful; it can offer a supportive environment for self-expression and relationship-building, particularly for teenagers who struggle to establish support networks in their daily lives.
Experts recommended setting appropriate age limits for social media use and promoting digital literacy among youth. They also highlighted the important role of parents in guiding and monitoring their children's online activities. These findings emerge amid ongoing global governmental discussions about new regulations to control children’s and adolescents’ access to social media platforms and safeguard their mental health.



