A growing body of scientific evidence is sounding the alarm—giving smartphones to children under 13 may harm their mental health, brain development, and social behavior. A new study published in JAMA Pediatrics links early smartphone use with anxiety, depression, and attention issues among preteens.
What the Study Found
Researchers analyzed data from thousands of children between the ages of 9 and 12. They tracked smartphone usage, emotional wellbeing, academic performance, and behavioral development. The results were clear: children who received smartphones before age 13 showed more signs of mental distress and had greater difficulty with focus and self-regulation than those who didn’t.
Notably, girls experienced the negative effects more strongly, especially when it came to social media-related stress and body image issues.
Why Age 13 Matters
The age of 13 aligns with platform policies like those of Instagram and TikTok, which restrict full access for younger users under data privacy laws. However, this new research suggests something deeper—the brain undergoes critical developmental changes at this age, and early smartphone exposure can disrupt this process.
More importantly, as children transition into adolescence, they begin developing emotional coping skills. If parents introduce smartphones too early, they may unintentionally replace healthy interaction with screen-based feedback loops.
What Parents Can Do
Instead of handing over smartphones, experts recommend providing age-appropriate devices with limited features such as calling and texting. They also advise delaying social media access, setting firm screen-time boundaries, and encouraging children to engage more in person.
As Dr. Jenny Radesky, a pediatrician and digital media researcher involved in the study, emphasized: “Smartphones are not just tools—they’re environments. And young kids aren’t ready to navigate them safely on their own.”
