Headline Roundup • December 4th, 2025
Meta Reportedly Canceled Research Showing Social Media's Negative Effects
Summary from the AllSides News Team
According to an unsealed legal filing, Meta reportedly shut down internal research into the mental health effects of Facebook after finding evidence its products harmed users' mental health.
The Details: According to several news reports, these internal documents show that a 2020 research project, called "Project Mercury," found people who stopped using Facebook for a week reported lower levels of depression, anxiety, loneliness and social comparison. The filing states Meta canceled the study and did not pursue further research, citing concerns about the "existing media narrative" around the company. Meta researchers had also reportedly described Instagram as "a drug" and noted teen behaviors resembling addiction, including compulsive use and high reward tolerance. Meta responded saying the allegations "rely on cherry-picked quotes and misinformed opinions in an attempt to present a deliberately misleading picture."
For Context: The filing, unsealed on Oct. 30, includes internal communications and studies dating back to 2017. It's part of a larger multidistrict lawsuit involving more than 1,800 plaintiffs, including school districts, parents and state attorneys general against multiple social media companies, including Meta, YouTube, TikTok and Snap. The plaintiffs claim the companies designed platforms that can harm children's mental health while prioritizing growth.
How the Media Covered It: Time Magazine (Lean Left bias) emphasized the impact on young users, and specifically noted Meta platforms were widely used for trafficking minors. It wrote the findings showed "Meta was aware that millions of adult strangers were contacting minors on its sites," and failed to disclose this to the public or Congress. National Review (Lean Right) emphasized the addictive nature of Meta's products, citing employee quotes likening themselves to "pushers" and comparing undisclosed findings to tobacco company practices. Reuters (Center) quoted a Meta spokesperson who told Congress the study was stopped due to flawed methodology and that they have made "real changes to protect teens." It also noted sexual abuse content allegations.
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Featured Coverage of this Story
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.

Kent Nishimura—Bloomberg/Getty Images
Sex trafficking on Meta platforms was both difficult to report and widely tolerated, according to a court filing unsealed Friday. The brief, filed by plaintiffs in the Northern District of California, alleges that Meta was aware of serious harms on its platform and engaged in a broad pattern of deceit to downplay risks to young users.
Meta knowingly downplayed the addictive nature of social media products that its own researchers privately compared to drugs as part of a broader effort to conceal the impacts of its platforms on teenage mental health, according to an explosive new court filing.
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