A woman won $3 million in damages on Wednesday after a jury found Meta and Google liable for designing social media platforms in ways that encouraged addiction and harmed her mental health.

The decision came in a Los Angeles proceeding in which jurors concluded that Meta, the parent company of Facebook, Instagram, WhatsApp and other platforms, bears 70% of the responsibility, with Google assigned the remaining share.

The lawsuit focused on how the platforms were built, arguing that design features contributed to compulsive use and negative mental health effects. By centering on platform design rather than content, the case sought to hold the companies accountable for the effect their products have on the user.

While the financial award is relatively small compared to the size of the companies, the outcome is viewed as potentially significant for similar claims involving social media use, including those involving addiction and mental health concerns affecting users and their children.

“Today’s verdict is a referendum from a jury, to an entire industry—that accountability has arrived,” the plaintiff’s lead counsel said in a statement.

Meta said it disagrees with the verdict. A spokesperson said the company’s lawyers are “evaluating our legal options.” Google said it plans to appeal, according to spokesperson José Castañeda.

The allocation of damages reflects the jury’s determination that Meta held the greater share of responsibility for the harm described in the case.

The case may have broader implications for how courts assess claims related to social media platforms, particularly those examining whether design choices can contribute to addictive behavior and mental health impacts.