Mark Zuckerberg testifies in Los Angeles trial over social media’s impact on youth mental health

The Meta CEO testified before a jury about allegations that social media platforms are harmful to young users’ mental health.

(CNN)- Mark Zuckerberg entered through the front doors of the Los Angeles Superior Court Wednesday morning and exited through a back entrance hours later, after taking the stand in a landmark civil trial centered on the impact of social media on children.

The Meta CEO testified before a jury for the first time about allegations that social media platforms — including Instagram — are harmful to young users’ mental health.

At the heart of the case is a 20-year-old woman identified in court only as “Kaley.” She accuses Meta and YouTube of designing addictive features that allegedly hooked her as a child, contributing to anxiety, depression and body dysmorphia.

Meta denies the allegations, arguing it has implemented numerous safeguards aimed at protecting young users. During testimony, Zuckerberg faced pointed questions about what the company knew regarding potential risks to teens and whether it took adequate steps to address those concerns.

Before proceedings began, nearly a dozen parents who say their children were harmed by social media gathered outside the courthouse, joining hands in a show of solidarity.

After Zuckerberg’s testimony, several parents spoke to reporters.

“I don’t have any satisfaction,” said Tammy Rodriguez, a mother who lost a child. “It’s very similar to what happened in Congress two years ago, when he swore under oath.”

Others emphasized the significance of the moment.

“Today was the most important day for us to understand the truth of what happened and what was known,” said Julianna Arnold, a founding member of Parents RISE!

Despite frustrations, Rodriguez said she believes the case could lead to change.

“I believe that there will be change,” she said.

The trial is expected to continue as jurors weigh testimony and evidence surrounding social media’s role in youth mental health.