Families of four teenagers who died by suicide file lawsuits against major social media and video platforms, alleging that the services contribute to harmful mental health outcomes. Reports say the plaintiffs name Meta and its platforms, along with TikTok, Snapchat, and YouTube. According to the lawsuits as described by multiple outlets, the families claim that exposure to content or features on these platforms can intensify or help drive depression, anxiety, and related mental health problems. The cases are presented as part of growing legal and public pressure on child-safety oversight and platform responsibilities, with other suits also emerging in the broader push for stronger protections for young users. The news coverage notes that the lawsuits reflect a wider trend of litigation focused on whether social media companies adequately address risks for children and teens. The outlets do not provide evidence of specific causal links in their summaries, and the lawsuits’ claims are presented as allegations by the families.