BRAIN DISTORTIONS? –
Dec. 1, 2025 – The study published Monday in the peer-reviewed journal Pediatrics found that owning a smartphone during early adolescence is associated with increased risks of mental health issues and obesity. As far as psychological impacts, it pinpointed higher incidences of depression and insufficient sleep among children who owned smartphones by ages 12 or younger, compared with others kids without the devices. Researchers at Children’s Hospital Philadelphia, the University of California at Berkeley, and Columbia University arrived at those conclusions after analyzing data from more than 10,000 adolescents around the United States who participated in the Adolescent Brain Cognitive Development Study (ABCD) between 2018 and 2020. That study, funded by the National Institutes of Health, describes itself as “the largest long-term study of brain development and child health” in the country.
According to researchers, 63.6% of the ABCD study’s participants owned a smartphone, and the median age they received them was at 11 years old. Using that data, the researchers determined that younger children had greater risks than older participants of poor sleep or obesity linked to smartphone ownership, with increasingly worse health outcomes reported for kids the younger they were when they received their first smartphone.
