A new Stanford Medicine study published on September 4, 2026, in the JAMA Health Forum looked at whether health warnings could change how teenagers and young adults think about social media use. Researchers wanted to see whether these warnings could make users more aware of possible health risks and discourage them from using social media.

The researchers tested 13 health warning messages covering issues such as depression, anxiety, sleep problems, body image, addiction, and mental health. The warnings were designed to look as if they appeared directly on an Instagram page.

The study comes as concerns about teenage social media use are leading to new discussions about how young users should be protected online.

Testing Health Warnings

The study included 1,012 participants between the ages of 13 and 29 in the United States. About half were teenagers between 13 and 17, while the other half were young adults between 18 and 29.

Participants viewed 15 different messages on a mock Instagram page. Thirteen were health warnings, one was a screen-time reminder encouraging users to take a break, and one was a neutral message used for comparison.

After viewing each message, participants rated how much it discouraged them from wanting to use social media and how much it increased their awareness of possible health risks.

Overall, the health warnings received stronger responses than the simple screen-time reminder. Warnings about mental health, depression, and anxiety received some of the strongest responses.

The results suggest that telling users about a specific health concern may get more attention than simply reminding them to take a break.

Limits of the Study 

There is an important limit to the study. Researchers did not track whether participants actually spent less time on social media after seeing the warnings.

Instead, participants reported how much each warning discouraged them from wanting to use social media. Saying that a warning would affect your behavior does not necessarily mean that you would actually close Instagram or spend less time scrolling.

There is also the question of what would happen if users saw these warnings every day. A warning that catches someone’s attention at first could eventually become another message they automatically close.

More research would be needed to find out whether the warnings actually change social media habits over time.

A Growing Debate Over Social Media 

The Stanford research comes at a time when social media health warnings are already moving beyond academic studies.

Several U.S. states, including California, Colorado, Minnesota, and New York, have passed laws involving health warnings on social media. California’s law is scheduled to take effect in 2027. The issue received national attention in 2024 when then-U.S. Surgeon General Vivek Murthy called for warning labels on social media platforms.

The discussion is also happening in South Korea.

On September 10, Meta, the parent company of Instagram and Facebook, said it was discussing possible protections for younger users with the South Korean government. Measures mentioned included limiting children’s use of Facebook and Instagram to two hours a day and restricting access during late-night hours.

For teenagers in Korea, that makes the issue especially current. Social media use is no longer being discussed only in terms of how much time teenagers spend on their phones. There is also growing attention on what platforms should do to protect younger users.

Warnings Are Only One Approach

Teenagers can already take steps to control their own social media use. They can turn off notifications, set screen-time limits, or decide when to put their phones away.

At the same time, social media platforms make it easy to keep scrolling. New posts and videos appear continuously, and users can move from one piece of content to another without having to decide whether to continue.

Health warnings would take a different approach from simply limiting access. Users could still decide whether to continue, but they would first see information about possible health effects.

Warnings alone, however, would not change the other features that encourage people to stay on social media. They might also become less noticeable if users see the same message repeatedly.

This is why health warnings are only one of several ideas being discussed as concerns about teenage social media use continue.

What the Study Still Cannot Tell Us

The Stanford study does not show that health warnings will actually make teenagers spend less time on social media. What it does show is that the type of message users see can affect how they respond to possible health risks.

The next question is whether those reactions would lead to actual changes in behavior outside a study.

For teenagers, the issue is especially relevant because they are the ones who would actually see these warnings on their screens. As governments and technology companies continue looking at ways to address teenage social media use, health warnings could become one of the changes young users begin seeing when they open an app.

By. Chanhyuk Lee 

Works Cited

Grummon, A. H., Ulm, C., Zeitlin, A. B., et al. (2026). Designing Social Media Health Warnings for Teenagers and Young Adults: A Randomized Clinical Trial. JAMA Health Forum, 7(9), e263014.

Stanford University. (2026, September 4). Warning labels could curb young people’s social media use. Stanford Report.

Yonhap News Agency. (2026, September 10). Meta in talks with Seoul on social media restrictions for children.