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

Meta's halted 2019 study found users who deactivated Facebook and Instagram reported lower depression and anxiety, but the findings were never publicly disclosed, court filings show.

  • On Friday, a court filing alleges Meta Platforms Inc. halted Project Mercury after tests showed reduced depression and anxiety among users who stopped using Facebook, which began in late 2019 to explore app impacts.
  • Plaintiffs in a multidistrict suit say school districts, parents and state attorneys general allege Meta Platforms Inc. knew its services harmed children and young adults and lied to Congress.
  • Researchers temporarily deactivated accounts for a month in the 2019 randomized deactivation experiment, and initial tests found users who stopped using Facebook for a week reported lower depression and anxiety.
  • The suit notes Meta Platforms Inc. never publicly released the deactivation-study results, the newly unredacted complaint reveals, while TikTok, Google's YouTube and Snapchat did not immediately respond to requests for comment.
  • Meta pushed back, with spokesperson Andy Stone saying, `We strongly disagree with these allegations, which rely on cherry-picked quotes and misinformed opinions in an attempt to present a deliberately misleading picture` and citing an unnamed Meta employee who warned of appearing like tobacco companies.
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(San Francisco = Yonhap News) Correspondent Kwon Young-jeon = Meta, the operator of Facebook and Instagram, deliberately concealed the harmful effects of social networking services (SNS) even after confirming them...

·Korea, Republic of
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According to court documents, the parent company of the online applications Facebook and Instagram, Meta, has stopped a study with evidence of psychological damage through its platforms, which was announced in a lawsuit by school districts in the US against several social media providers.

·Germany
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WTVB broke the news in on Sunday, November 23, 2025.
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