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Quoted By:
https://www.reuters.com/sustainability/boards-policy-regulation/meta-buried-causal-evidence-social-media-harm-us-court-filings-allege-2025-11-23/
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 (META.O)
, opens new tab 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.
“The Nielsen study does show causal impact on social comparison,” (unhappy face emoji), an unnamed staff researcher allegedly wrote. Another staffer worried that keeping quiet about negative findings would be akin to the tobacco industry “doing research and knowing cigs were bad and then keeping that info to themselves.”
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 (META.O)
, opens new tab 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.
“The Nielsen study does show causal impact on social comparison,” (unhappy face emoji), an unnamed staff researcher allegedly wrote. Another staffer worried that keeping quiet about negative findings would be akin to the tobacco industry “doing research and knowing cigs were bad and then keeping that info to themselves.”
