Lancet Calls for Global Digital Health Treaty for Youth

A landmark three-paper series in The Lancet argues that digital health for children and young people has become a global public health priority, calling for coordinated international governance of the platforms and business models shaping their lives. The series, written by 13 global experts from 10 countries and published in October 2026, draws on an umbrella review of 121 individual reviews covering data on 9 million people under the age of 25, as reported by Medical Xpress.

At the heart of the findings is a distinction between raw hours online and what the authors call problematic digital media use: compulsive, addiction-like patterns in which scrolling displaces sleep, exercise, and schoolwork and proves difficult to control. According to the series authors, more than three-quarters of the reported exposure-outcome associations were adverse, a finding they say justifies precautionary digital health action even though the available evidence cannot yet establish cause and effect.

The series places much of the responsibility on platform architecture rather than willpower. Features such as infinite scroll, autoplay, and personalized recommendation feeds are deliberate design choices engineered to capture attention and harvest data, the authors argue, not accidents that users can simply self-regulate away. The industry's response to mounting evidence — manufacturing doubt, discrediting critics, framing regulation as a threat to freedom — echoes the corporate defense playbook long associated with tobacco and fossil fuel companies, as reported by ScienMag.

Digital Health Risks Differ by Age

For children, higher overall use is associated with poorer socio-emotional and cognitive development, increased anxiety and depression, and poorer sleep quality. For adolescents, specific patterns of engagement are tied to reduced quality of life, sleep problems, lower physical activity, and, at the extreme, non-suicidal self-injury, suicidal ideation, and substance use, as reported by Fast Company. These age-related differences show that digital health effects are not a uniform phenomenon across childhood and youth.

Across age groups, total time spent in front of screens is linked to obesity, nearsightedness, lower back pain, and cardiometabolic risk. To illustrate the population stakes, the authors estimated that spending more than two hours a day on screens could be associated with roughly 2.8 million healthy years of life lost to depression and 240,000 lost to obesity worldwide each year, while cautioning that the projections are illustrative rather than precise, given the low certainty of the evidence.

The digital health ledger is not entirely one-sided. The review also finds beneficial associations, including a link between moderate use and higher well-being and between active video games and healthier lifestyles, particularly when children watch educational content alongside caregivers. Sunny Xun Liu, research director at the Stanford Social Media Lab, cautions that much of the research rests on self-reported data, which can be unreliable when teenagers are asked to recall what they saw online. The series authors themselves acknowledge the limits: the most valuable data on how platform features affect users remain locked inside technology companies, according to series author Louise Holly, limiting independent scrutiny and slowing scientific progress.

A Digital Health Treaty for the Platform Era

The authors argue that single measures such as age limits cannot fix the structural drivers of harm. Instead, they call for coordinated digital health governance at the company, national, and global levels: mandatory safety assessments before new products or features launch, required data-sharing with vetted public-interest researchers, a global governance treaty through the World Health Organization to set baseline standards, and a dedicated international body to monitor artificial-intelligence harms to children and young people.

The series also spotlights litigation as an emerging route to digital health accountability. Legal action can compel companies to disclose internal documents and shift the public conversation about who is responsible for harm, according to series chair Ilona Kickbusch, though she stresses that lawsuits are one route among several and cannot substitute for regulation.

A youth panel of six young adults ages 23 to 30 helped shape the series, contributing lived experience the research alone could not capture. The health risks tied to digital systems are preventable, according to panel member Salman Fitrat Khan of India, who argues that better governance and giving young people a real say in shaping the platforms around them can deliver connection, information, and opportunity without the health costs, and that governments should act now rather than wait for perfect evidence.

For Gen Z, the practical takeaway of this digital health push is that the risk lies less in minutes on a screen than in compulsive patterns engineered by design — and the proposed fixes target the companies behind those designs, not the users. For more context on the youth mental health picture, read the earlier investigation into hidden emotional distress among young Indians, and explore more stories on the Mind & Body beat.