Zuckerberg Testifies in Trial on Social Media's Impact on Children

Meta Platforms CEO Mark Zuckerberg testified in a closely watched major trial examining whether social media impact on children has been harmful by design.

The case, heard in a Los Angeles court, focuses on claims that Meta Platforms built products that encouraged prolonged use among minors despite internal awareness of mental health risks.

During his testimony, Zuckerberg rejected allegations that the company intentionally targeted children or prioritised engagement over safety. He said Meta has invested in child online safety measures, including age verification systems, parental controls, and content moderation tools. Zuckerberg told the court that underage accounts are removed when detected, while acknowledging that verifying age across the internet remains difficult.

• Mark Zuckerberg testifies on social media's effects on children
• Meta Platforms faces trial over social media harm to minors
• Social media algorithms linked to teen mental health concerns

Plaintiffs’ lawyers presented internal communications suggesting executives were aware that young users found it difficult to disengage from platforms such as Instagram and Facebook. The court also examined the role of social media algorithms, with arguments that recommendation systems and appearance-altering filters contributed to anxiety, low self-esteem, and other teen mental health concerns. Zuckerberg responded that these features were subject to internal research and, in some cases, were later changed or limited.

The proceedings further reviewed Meta’s broader approach to youth wellbeing. Zuckerberg referenced industry-wide discussions on reducing online harm and said social platforms reflect broader societal challenges rather than creating them alone. He maintained that social media can offer connection and support when used responsibly.

Legal experts noted that the case could become a key reference point for tech regulation debates in the United States. A ruling against Meta may strengthen similar cases and raise pressure on policymakers to tighten platform accountability standards.

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The verdict is expected to influence future lawsuits, regulatory frameworks, and how technology companies address risks to young users.