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Is Instagram addictive? Mark Zuckerberg faces questions in court.

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Mike Blake/Reuters
Meta Platforms CEO Mark Zuckerberg arrives outside court to take the stand at trial in a case accusing Meta and Google of harming kids' mental health through addictive platforms, in Los Angeles, Feb. 18, 2026.

Meta Platforms CEO Mark Zuckerberg testified in a Los Angeles court Wednesday about accusations that Instagram is exploiting young people and harming their mental health. His company is on trial, alongside Google, in a civil suit seen as a test case for holding tech companies to account for social ills blamed on their products, particularly among young users.聽

The plaintiff is a 20-year-old woman who has said she became addicted to Instagram (owned by Meta) and YouTube (owned by Google) as an adolescent and that her mental health suffered severely as a result. Meta has argued that her mental health struggles were caused by other factors, including family circumstances. Two other social media platforms, Snapchat and TikTok, settled for undisclosed amounts before the trial began.

Mr. Zuckerberg was questioned on the stand by Mark Lanier, the plaintiff鈥檚 lawyer, about Instagram鈥檚 controls on children under 13 using the platform. The app requires users to be 13 or older but didn鈥檛 start asking new users to input a birthdate until 2019. Mr. Zuckerberg defended its policy as appropriate. (The plaintiff has said she began using Instagram aged 9.)

Why We Wrote This

Meta CEO Mark Zuckerberg testified in a trial that鈥檚 weighing a hot issue for both U.S. families and tech companies 鈥 whether social media is designed to be addictive and poses special risks for teenagers.

鈥淚 don鈥檛 think we identified every single person who tried to get around [age] restrictions, but you鈥檙e implying we weren鈥檛 trying to work on it and聽, according to news reports from the courtroom.

Mr. Lanier also pressed Mr. Zuckerberg about goals set by Meta, the parent company, to maximize the time users spent on Instagram.聽from time goals to the 鈥渦tility and value鈥 of the platform. He said, 鈥淭here鈥檚 a basic assumption I have that if something is valuable, then people will do it more.鈥

The lawsuit tries to sidestep the broad protections that tech platforms enjoy against being sued for user-created content. Instead of arguing that Instagram was liable for harmful content, it accuses the company of designing an addictive app it knew could prove harmful for teenage girls.

If Instagram/Meta loses the case, it could prove momentous for social-media companies. They face a wave of lawsuits that allege that their platforms are deliberately hooking and harming young users. Separately,聽for allegedly not stopping online predators targeting minors using Instagram. Meta denies the allegation.

Last week聽. He defended the company and said it weighed 鈥渄ifferent considerations鈥 in vetting Instagram features, which include photo filters that mimic the effects of plastic surgery. Instagram had an internal debate about whether to permit these filters, according to court documents, before allowing them to be used. He also asserted in court that social media isn鈥檛 鈥渃linically鈥 addictive.

Australia recently became the first country to ban social-media access for under-16s. Several European countries have weighed similar legal restrictions.

Matthew Bergman, a plaintiffs鈥 attorney, said in a statement that Meta鈥檚 own safety teams understood the dangers its platforms posed, and that Mr. Zuckerberg鈥檚 testimony 鈥渃arries profound weight鈥 for families who have been waiting for their voices to be heard.

Parents who say their children鈥檚 mental health was harmed by social media gathered outside the courtroom before Mr. Zuckerberg arrived. He has previously been quizzed about child safety on his platforms during congressional hearings, but this was the first time that he鈥檇 been called to testify in a courtroom.

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