Meta buried 'causal' evidence of social media harm, US court filings allege

Source: Reuters

Meta buried 'causal' evidence of social media harm, US court filings allege

Jeff Horwitz
Sat, November 22, 2025 at 7:20 PM EST
4 min read

(Reuters) -Meta shut down internal research into the mental health effects of Facebook after finding causal evidence that its products harmed users’​ mental health, according to unredacted filings in a lawsuit by U.S. school districts against Meta and other social media platforms.

In a 2020 research project code-‌named “Project Mercury,” Meta scientists worked with survey firm Nielsen to gauge the effect of “deactivating” Facebook, according to Meta documents obtained via discovery. To the company’s disappointment, “people who ‌stopped using Facebook for a week reported lower feelings of depression, anxiety, loneliness and social comparison,” internal documents said.

Rather than publishing those findings or pursuing additional research, the filing states, Meta called off further work and internally declared that the negative study findings were tainted by the “existing media narrative” around the company.

Privately, however, a staffer insisted that the conclusions of the research were valid, according to the filing.

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Read more: https://www.yahoo.com/news/articles/meta-buried-causal-evidence-social-002013179.html