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Lancet Series Links Problematic Digital Media Use to Youth Health Harms, Urges Regulation
ReLancet Series Links Problematic Digital Media Use to Youth Health Harms, Urges Regulation
A three-paper series in The Lancet analyzing data from 9 million people under 25 finds consistent associations between problematic digital media use and harms including self-injury, suicidal ideation, and developmental problems, while calling for governments to require tech companies to share data with independent researchers.
Problematic digital media use is consistently associated with a range of physical and mental health harms in young people, according to a three-paper series on «digital determinants of health» published in The Lancet. The series and an accompanying meta-review, authored by experts from 10 countries, analyzed existing research covering data from 9 million people younger than 25.
The review found that addiction-like patterns of use, rather than screen time alone, were linked to adverse outcomes. Across age groups, overall screen time was associated with obesity, nearsightedness, lower back pain, and cardiometabolic risk. For children, higher screen time was tied to poorer socio-emotional and cognitive development, increased anxiety and depression, and worse sleep quality. For adolescents, specific patterns of digital engagement were associated with reduced quality of life, sleep problems, lower physical activity, non-suicidal self-injury, suicidal ideation, and substance use.
More than three-quarters of the reported exposure-outcome associations were adverse, the meta-review said. However, it also noted evidence of beneficial use, such as children watching educational content with caregivers and adolescents playing active video games. «These age-related differences emphasize that digital media use is not a uniform phenomenon,» the review stated.
The authors stress that the available evidence does not establish cause and effect. Self-reported data has limitations, said Sunny Xun Liu, director of research at the Stanford Social Media Lab, who was not involved in the Lancet series. Liu coauthored a recent study in JAMA Pediatrics examining how often adolescents reported negative online experiences, finding that responses varied substantially by platform. «If you ask [adolescents], ‘Okay, what type of harmful content have you seen in the past four weeks?’ it’s really hard for anybody to answer that question,» Liu said.
Both Liu and the series authors said better data exists but is often inaccessible. «The most valuable data on how these platforms actually affect users are hidden within technology companies, limiting independent scrutiny and slowing scientific progress,» said series author Louise Holly, a policy and research coordinator at the Digital Transformations for Health Lab in the U.K. One key recommendation is that governments require tech companies to share that data with vetted public-interest researchers.
Even without that data, the authors argue the scale of evidence warrants action now. They call for a public health approach with more research and regulation, noting that single measures like app age limits are insufficient. «Technology companies are borrowing a playbook well known from tobacco and fossil fuels: Manufacture doubt, discredit critics, frame regulation as a threat to freedom,» said series author Barbara Prainsack, a political science professor at the University of Vienna. She added that good regulation can drive innovation toward safety and trust, and that without it, companies set the rules instead of public policy.
Liu agreed on the importance of a public health approach and suggested that researchers and policymakers listen to young people, better support overwhelmed families and caregivers, and find novel ways to study the complexities of digital media use.
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