As smartphones become ubiquitous, new research is highlighting potential health costs for children. A study by US researchers found that for tweens on the cusp of adolescence, owning a phone by age 12 was associated with a higher risk of depression, obesity, and insufficient sleep compared to their phone-less peers.
Child and adolescent psychiatrist Dr. Ran Barzilay, from the Children's Hospital of Philadelphia, warns, "We should view smartphones as a significant factor in teen health, approaching the decision to give a child a phone with care."
The study of over 10,000 young people revealed concerning associations:
- Sleep: 47% of 12-year-olds with phones reported insufficient sleep (less than nine hours), versus 31% without.
- Obesity: 18% of phone owners had an obesity diagnosis, versus 12% of non-owners.
- Depression: The diagnosis rate for depression was higher in the phone-owning group (approx. 6.5%) than in the non-owning group (approx. 4.5%).
Although researchers acknowledge smartphones can offer benefits like strengthening social connections, the strong association with negative outcomes—which mirrors adult studies linking phones to increased stress and distraction—warrants further investigation.
Ultimately, Dr. Barzilay urges caution: "It's critical for young people to have time away from their phones to engage in physical activity, which can protect against obesity and enhance mental health over time."
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