Meta Platforms, TikTok and YouTube are facing renewed legal scrutiny this week as a California court begins a landmark trial examining claims that social media platforms are contributing to a youth mental health crisis. The case, filed in Los Angeles County Superior Court, was brought by a 19 year old California woman identified as K.G.M., who alleges that she became addicted to the platforms at a young age due to their design features, leading to depression and suicidal thoughts.
The lawsuit marks the first of several cases expected to go to trial this year centred on what plaintiffs describe as social media addiction among children. The court will determine whether the companies were negligent and whether the plaintiff’s use of the apps was a substantial factor in her mental health challenges, compared with other influences such as third party content or offline circumstances. Legal experts say the case could set a precedent for how similar claims are treated in future.
Meta chief executive Mark Zuckerberg is expected to testify, with the company maintaining that its products did not cause the plaintiff’s condition. Snap, which was also named in the suit, has reached a settlement and will no longer be part of the trial, while YouTube is expected to argue that its platform differs fundamentally from social media apps like Instagram and TikTok. TikTok has declined to comment publicly on its defence strategy.
As the trial unfolds, the companies are also intensifying public campaigns aimed at reassuring parents and policymakers about youth safety. These efforts include promoting parental control tools, sponsoring school based safety workshops and partnering with organisations focused on digital literacy. Critics, however, argue that the legal proceedings will test whether such measures are sufficient, as courts weigh claims that platform design choices may be harming young users.