MLex Summary: The four large social media companies — Meta Platforms, YouTube, Snap* — accused of triggering a mental health crisis among US teens by building addictive platforms that young users were unable to stop using, replied in detail to requests from MLex for comment. “We disagree with these allegations and are confident the evidence will show our longstanding commitment to supporting young people,” Meta said. TikTok did not respond to a request for comment.

*Corrected at 22:08 GMT on December 23, 2025 to reflect that TikTok did not respond to a request for comment.