Smartphone Ownership Linked to Eating Disorder Symptoms
A study found higher rates of disordered eating among children who owned smartphones at age 12.
Updated on Sept. 25, 2026 in Pre-Teens
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A research study published in JAMA Network Open identified a significant correlation between smartphone ownership at age 12 and the development of eating disorder symptoms by age 14. Researchers analyzed data from nearly 9,000 adolescents to observe how device access influences body image and health behaviors.
Why it matters
Smartphones provide early, frequent access to appearance-focused digital content that may foster body dissatisfaction and unhealthy eating behaviors in pre-teens. Understanding this link is critical as social media usage remains high among children.
Approximately 70% of 12-year-olds in the study owned a smartphone, with 24% of those owners reporting eating disorder symptoms by age 14. Owners were also twice as likely to link their self-worth to weight compared to non-owners.
The players
JAMA Network Open
This is a peer-reviewed medical journal that publishes original research on clinical care and health policy.
University of California, San Francisco
This public research university is a major hub for health sciences and academic medical studies.
The details
Children who owned smartphones at age 12 were 1.5 times more likely to use dieting or exercise to control their weight than those who did not. With nearly two-thirds of 11- and 12-year-olds maintaining accounts on platforms like TikTok and Instagram, researchers emphasize the role of appearance-focused content in these trends.
Timeline
Friday, September 2026, when the research was published.
Age 12, when smartphone ownership was measured.
Age 14, when participants were assessed for eating disorder symptoms.
Culture Shift
This research follows the longitudinal methodology established by the Adolescent Brain Cognitive Development Study to track long-term health metrics. It reflects a growing focus on how pervasive digital connectivity is altering the developmental milestones and body image perceptions of young children.
Parents may need to reconsider the timing of smartphone introduction and increase supervision of social media content to mitigate body image pressures. Proactive conversations about media literacy and the distinction between digital portrayals and reality are becoming essential for managing pre-teen health.
The takeaway
Limiting access to appearance-centric social media during early adolescence can help prevent the internalization of unrealistic beauty standards. Prioritizing offline activities that foster self-worth independent of physical appearance remains a vital strategy for parents.
Further reading
For more information on adolescent health trends, visit the Pre-Teens section.
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Do you believe children are negatively impacted by early access to smartphones and social media?
