The Instagram addiction trial in California has entered a critical phase, with Instagram CEO Adam Mosseri denying that his company deliberately designed its platform to make children clinically addicted.
Mosseri testified on Wednesday in a Los Angeles courtroom in a civil case that could set a legal precedent for how US courts assess claims that social media companies engineered addiction for profit.
Meta, the parent company of Instagram and Facebook, and Google-owned YouTube are defendants in the case. The lawsuit centers on allegations that a young woman suffered severe psychological harm after prolonged exposure to social media from childhood.
The outcome is being closely watched as hundreds of similar lawsuits are filed across the United States.
What is the Instagram addiction trial about?
The case focuses on a 20-year-old woman identified in court documents as Kaley G.M. Her legal team argues that she became addicted to social media platforms at a young age, leading to serious mental health consequences.
According to court testimony:
She began using YouTube at age six.
She joined Instagram at age 11.
Two to three years later, she started using Snapchat and TikTok.
Plaintiffs claim that platforms such as Instagram and YouTube were intentionally designed to stimulate repeated use among minors by exploiting neurological reward systems.
Attorney Mark Lanier, representing the plaintiff, told jurors that major technology companies “engineer addiction in children’s brains” to increase engagement and profit. He argued that these corporations “don’t only build apps; they build traps.”
Meta and Google deny these accusations.
Adam Mosseri denies clinical addiction claims
During his testimony, Mosseri rejected the characterization of Instagram as a product that creates clinical addiction.
“I think it’s important to differentiate between clinical addiction and problematic use,” Mosseri told the court under questioning from Lanier.
He compared excessive social media use to binge-watching entertainment content, stating that describing such behavior as “addiction” does not necessarily meet medical standards for clinical dependency.
Mosseri also pushed back against claims that Meta prioritizes growth over user safety. He rejected the notion that the company operates under a “move fast and break things” philosophy at the expense of minors.
“Protecting minors over the long run is even good for the business and for profit,” he said.
His testimony precedes a scheduled court appearance by Meta CEO Mark Zuckerberg on February 18. YouTube CEO Neil Mohan is expected to testify the following day.
YouTube rejects being labeled social media
Lawyers representing YouTube argued that the video-sharing platform is neither intentionally addictive nor technically a social media network.
YouTube attorney Luis Li told jurors that the service offers users the ability to watch videos free of charge across devices, comparing it to Netflix or traditional television.
Li stated that the plaintiff herself, along with her doctor and father, did not describe her as addicted to YouTube. He also cited internal communications that he said showed company leaders prioritizing educational and socially useful content rather than viral trends.
The defense maintains that any harm experienced by the plaintiff cannot be directly attributed to the design of the platforms. Meta’s attorney argued that family circumstances played a central role in her mental health struggles.
Expert testimony compares social media to drugs
The plaintiffs called Stanford University School of Medicine professor Anna Lembke as their first witness. Lembke, author of the book “Dopamine Nation,” testified that she views social media broadly as functioning like a drug.
She told jurors that the part of the brain responsible for impulse control is typically not fully developed until around age 25. As a result, young people are more likely to take risks and struggle to assess long-term consequences.
Lembke described YouTube as a potential “gateway drug” because of its early accessibility to children.
Her testimony forms part of the plaintiffs’ argument that technology companies exploited neurological vulnerabilities in minors.
Broader legal implications across the United States
The Instagram addiction trial is considered a bellwether case. Its outcome could influence:
Hundreds of pending lawsuits against social media companies.
Future regulation of digital platforms targeting minors.
Legal standards for defining technological addiction.
Social media firms are facing more than a thousand lawsuits alleging that their platforms contributed to depression, eating disorders, psychiatric hospitalization, and in some cases suicide among young users.
Additional test trials are scheduled in Los Angeles before summer, while a nationwide lawsuit will be heard by a federal judge in Oakland, California.
Separately, a lawsuit in New Mexico accuses Meta of prioritizing profit over protecting minors from sexual predators.
The California trial is currently scheduled to run until March 20.
Conclusion:
As the Instagram addiction trial continues, testimony from senior technology executives and medical experts is expected to shape a legal debate that could redefine corporate responsibility in the digital age. The case’s outcome may have lasting implications for how social media platforms operate and are regulated in the United States.
