Your daughter stopped eating dinner with the family. She said she was not hungry, but you found her looking at herself in the mirror from every angle, pulling at her clothes, her face tight with something that looked like panic. When you asked her pediatrician about it, you were told it was normal teenage self-consciousness. When the school counselor called to say she had been cutting herself, you felt the floor drop out from under you. You thought you had done something wrong as a parent. You thought she was just going through a phase. You thought this was somehow your fault.
Your son spent six, seven, eight hours a day on his phone. When you tried to take it away, he became someone you did not recognize—angry, desperate, physically shaking. His grades fell. He stopped seeing his friends in person. He told his therapist he felt worthless, that everyone else had a better life, that he could not stop scrolling even though it made him feel terrible. The therapist said it was depression and anxiety. No one mentioned that the platforms he was using might have been designed to create exactly this response.
You are not imagining this. What happened to your child was not a failure of parenting, not a character flaw, not bad luck. According to lawsuits filed against Meta, TikTok, and Snapchat in courts across the country, these companies conducted their own internal research showing their platforms could be addictive and harmful to minors—and then, the complaints allege, made design choices that prioritized engagement and profit over the mental health of young users.
What Happened
The injury is not just excessive screen time. It is a pattern of compulsive use that young people cannot control, even when they want to stop. Teenagers describe feeling physically unable to put their phones down. They check their accounts hundreds of times a day. They wake up in the middle of the night to look at notifications. They feel anxious, irritable, or depressed when they cannot access the platforms. They compare themselves constantly to images that have been filtered and curated, and they feel they will never measure up.
The mental health consequences are severe. Depression that was not there before. Anxiety that makes it hard to function at school or at home. Eating disorders triggered by endless exposure to idealized body images and diet content. Self-harm, sometimes as a way to cope with feelings of worthlessness, sometimes because they encountered communities on these platforms that normalized cutting or other dangerous behaviors. In the most tragic cases, suicidal thoughts and attempts.
Parents describe children who were happy and social becoming isolated and despondent. Teens describe losing hours of their lives to scrolling, feeling terrible the whole time but unable to stop. They describe a need to check their likes, their comments, their view counts, a need that feels as urgent as hunger or thirst. This is not a matter of willpower. This is not a choice. According to the lawsuits, this is the result of deliberate design decisions that exploit the developing adolescent brain.
The Connection
Social media platforms are engineered to be habit-forming. The lawsuits allege that Meta, TikTok, and Snapchat designed features specifically to maximize the time young users spend on their apps, using techniques that behavioral scientists have compared to gambling mechanics. Every time a teenager opens the app, they do not know what they will see—a like, a mean comment, a message, nothing at all. That unpredictability triggers dopamine release in the brain, the same neurochemical involved in addiction to drugs and gambling.
The adolescent brain is particularly vulnerable. The prefrontal cortex, which controls impulse regulation and decision-making, is not fully developed until the mid-twenties. Meanwhile, the limbic system, which drives reward-seeking behavior, is in overdrive during adolescence. Features like infinite scroll, autoplay videos, push notifications, streaks, and algorithmic feeds that show increasingly engaging content are designed to exploit this developmental window.
A study published in JAMA Psychiatry in 2019 followed more than 6,500 adolescents over several years and found that those who checked social media most frequently had significantly higher rates of depression and anxiety. Research published in The Wall Street Journal in 2021, based on internal Facebook documents, showed that the company conducted studies finding that Instagram made body image issues worse for one in three teenage girls, and that teens blamed Instagram for increases in anxiety and depression.
The mechanism is not just the time spent. It is what happens during that time. Algorithms prioritize content that generates strong emotional reactions, which often means content that is upsetting, extreme, or designed to provoke insecurity. A teenage girl who looks at one diet post will be shown dozens more. A teenager struggling with dark thoughts may be recommended content about self-harm or suicide. The platforms learn what keeps each user engaged and deliver more of it, regardless of whether that content is harmful.
Snapchat streaks require users to send messages back and forth every single day or lose their streak count, creating social pressure and anxiety. TikTok videos autoplay in an endless feed optimized to be as engaging as possible, making it nearly impossible to find a natural stopping point. Meta platforms use likes, comments, and social comparison features that research has linked to decreased self-esteem and increased depression in young users. According to the complaints, these were not accidents. These were choices.
What The Lawsuits Allege They Knew
The lawsuits filed against these companies include detailed allegations about what their internal research showed and when. These are claims made in the complaints, drawn from disclosed documents, congressional testimony, and whistleblower accounts. They have not been proven in court, but they are part of the public record in this litigation.
According to a complaint filed in the Northern District of California consolidating hundreds of cases, Facebook researchers prepared an internal presentation in 2019 that stated, as alleged in the court filings, that "we make body image issues worse for one in three teen girls." The same internal research, according to the complaint, found that among teens who reported suicidal thoughts, 13 percent of British users and 6 percent of American users traced the issue to Instagram. The lawsuits allege that despite this internal research, Meta continued to publicly downplay the risks and did not implement meaningful changes to protect young users.
Documents disclosed during congressional hearings in 2021 included internal Facebook research from March 2020 that, according to testimony by whistleblower Frances Haugen, showed the company was aware that Instagram exploited teen insecurities and that the platform could lead vulnerable teens into a cycle of negative social comparison and addiction. The lawsuits cite these documents and allege that Meta had knowledge of these risks for years before they became public.
Court filings further allege that TikTok conducted internal testing showing that the platform could become addictive quickly. According to a complaint filed in the Eastern District of New York, internal TikTok communications discussed how the infinite scroll and autoplay features were designed to keep users engaged for as long as possible, and that the company tracked compulsive use patterns. The lawsuits allege that TikTok was aware its algorithm could push harmful content to vulnerable young users but continued to prioritize engagement metrics over safety.
The complaints against Snapchat allege that the company knew the streaks feature created anxiety and compulsive checking behavior in young users. According to court filings, internal communications showed that Snapchat designed the feature specifically to increase daily active usage, and that the company was aware of reports from parents and mental health professionals that the streaks were contributing to stress and sleep deprivation in minors. The lawsuits allege that Snapchat chose not to remove or modify the feature because it was effective at driving engagement.
A coordinated lawsuit filed by more than 40 state attorneys general in October 2023 alleges that Meta knowingly designed its platforms to addict children and teens, and that the company misled the public about the safety of its products. The complaint cites years of internal research and alleges that Meta ignored the findings of its own scientists when those findings conflicted with business goals. These are allegations made by state officials based on their review of internal documents, not yet adjudicated by a court.
What The Lawsuits Say About Concealment
The court filings allege not only that these companies knew about the risks, but that they actively concealed that knowledge from parents, regulators, and the public. These allegations are contested and have not been proven, but they are a significant part of the litigation.
The lawsuits allege that Meta repeatedly made public statements minimizing the harms of its platforms, even as its internal research showed significant risks to teen mental health. According to the complaints, executives testified before Congress that they were not aware of research linking Instagram to harm in young users, despite the existence of internal studies showing exactly that. The lawsuits characterize these statements as misleading and allege they were part of a pattern of concealment.
Court filings further allege that the companies used design choices to obscure how much time young users were spending on the platforms and how harmful the content they encountered was. According to the complaints, the platforms made it difficult for parents to monitor their children's usage and did not provide meaningful parental controls until years after they knew about the risks. The lawsuits allege this was intentional, designed to avoid scrutiny and regulation.
The complaints also allege that the companies funded or promoted research that downplayed the harms of social media while suppressing or failing to publish their own internal findings that showed significant risks. According to court filings, this created a distorted picture in the scientific literature and made it harder for doctors, parents, and policymakers to understand the true scope of the problem. These allegations are based on internal documents and communications disclosed during discovery and congressional investigations, but they remain claims to be litigated, not established facts.
Some lawsuits allege that the platforms targeted children under the age of 13, despite terms of service that prohibited users under that age, because younger users were seen as a key growth demographic. According to complaints filed in multiple jurisdictions, internal documents allegedly showed that the companies knew many of their users were under 13 but did not take effective steps to remove them because doing so would have reduced engagement and revenue.
Why Your Doctor May Not Have Told You
When you took your child to the pediatrician or the therapist, they likely talked about screen time in general terms. They may have suggested limiting phone use or encouraging other activities. But they probably did not tell you that the platforms themselves might be designed to be addictive, or that there was internal research suggesting they caused harm. That is not because your doctor failed you. It is because the information was not available.
For years, the public conversation about social media and teen mental health focused on correlation, not causation. Studies showed that heavy social media use was linked to depression and anxiety, but researchers and clinicians debated whether the platforms caused the problems or whether teens who were already struggling simply used social media more. The internal research that might have clarified that question was not public. According to the lawsuits, the companies had studies showing a causal link, but those studies were not shared with the medical community or the public.
The lawsuits allege that this gap was not accidental. Court filings claim that the platforms had a financial incentive to keep the scope of the problem unclear, because clearer evidence of harm would have led to regulation, lawsuits, and public pressure to change their products in ways that would reduce engagement and revenue. By keeping their internal research confidential, the complaints allege, the companies were able to control the narrative and delay accountability.
Even now, many pediatricians and therapists are not fully aware of the design features that make these platforms particularly harmful to adolescents. They may recommend reducing screen time, but they may not know to ask about streaks, about algorithmically curated feeds, about the specific features that create compulsive use. The lawsuits are bringing this information into the public record, but it is still filtering out to the clinicians who treat young people every day.
Who Is Affected
The lawsuits involve young people who used Meta platforms like Facebook and Instagram, TikTok, or Snapchat as minors and developed mental health conditions including depression, anxiety, eating disorders, self-harm behaviors, or suicidal thoughts. If your child or you yourself as a young adult experienced these outcomes, this is what the litigation is looking at.
Typically, the cases involve use that began before age 18, often in early or middle adolescence. The use was frequent—multiple hours per day, compulsive checking, difficulty stopping even when the user wanted to. The mental health symptoms developed during or after a period of heavy platform use, and there is often a clear timeline where things got worse as use increased.
This includes teenagers who developed body image issues and eating disorders after spending significant time on Instagram or TikTok, particularly those who were shown content related to dieting, thinness, or appearance. It includes young people who began self-harming after encountering self-harm content on these platforms, or who were connected through algorithms to communities that normalized cutting or other dangerous behaviors. It includes teens who became severely depressed or anxious, who withdrew from in-person relationships, who felt unable to function without constant access to their accounts.
Parents often describe a clear before and after. Before the platform use became heavy, their child was engaged, social, relatively happy. After, they were withdrawn, anxious, obsessed with their appearance or their online presence, unable to put the phone down even when it was clearly making them miserable. The change was not gradual. It was sharp, and it corresponded with increased use of these specific platforms.
Young adults who are now in their late teens or early twenties but who experienced these harms as minors are also included in the litigation. You do not have to currently be a minor to participate. If you were under 18 when you were using these platforms heavily and when your mental health declined, that is the relevant window.
The litigation also includes cases involving children who died by suicide, where the families allege that the platforms contributed to their child's death through addictive design, harmful content, or algorithmically recommended material related to self-harm or suicide. These are the most devastating cases, and they are at the center of the legal and public reckoning with what these companies allegedly knew and chose to do.
Where Things Stand
As of early 2025, there are hundreds of individual lawsuits filed against Meta, TikTok, and Snapchat in state and federal courts across the country. Many of these cases have been consolidated into multidistrict litigation in the Northern District of California for coordinated pretrial proceedings. The MDL allows for efficient discovery and motion practice while preserving the individual nature of each case.
In October 2023, a bipartisan coalition of more than 40 state attorneys general filed a coordinated lawsuit against Meta, alleging that the company knowingly designed its platforms to addict children and teens and that it misled the public about the safety of its products. That case is proceeding separately and represents one of the most significant legal challenges the company has faced.
Discovery is ongoing, meaning that attorneys are obtaining internal documents, communications, and research from the companies. Much of this material is subject to protective orders and is not yet public, but it is expected to form the basis for the arguments at trial. Some documents have been disclosed through congressional hearings and whistleblower disclosures, and those documents are cited extensively in the complaints.
There have not yet been trials or settlements in the coordinated social media addiction litigation, but the legal process is moving forward. Judges have denied motions to dismiss several of the cases, finding that the allegations are sufficient to proceed to discovery and potentially to trial. That is a significant development, as it means the courts have determined that the claims are legally viable and that the plaintiffs are entitled to seek evidence from the companies.
New cases are still being filed. The litigation is not closed, and individuals and families who believe they were harmed by these platforms are continuing to come forward. The timeline for resolution is uncertain—complex litigation of this kind can take years—but the legal framework is now established, and the cases are progressing through the court system.
Other countries are also pursuing legal and regulatory action. The European Union has implemented stricter regulations on digital platforms under the Digital Services Act, and the United Kingdom has passed the Online Safety Act, both of which impose greater responsibility on platforms to protect young users. These international efforts reflect a growing recognition that the harms alleged in the U.S. lawsuits are not isolated or anecdotal, but part of a broader pattern.
What happened to your child was not random. It was not something you could have predicted or prevented on your own. According to the lawsuits, it was the result of corporate decisions made by companies that had research showing the risks and chose engagement over safety. You are not alone in this. Hundreds of families are telling the same story, and the legal system is finally listening.
The platforms that were supposed to connect young people and give them a space to express themselves were, the lawsuits allege, designed in ways that exploited their vulnerabilities and damaged their mental health. That was not an accident. That was not an unintended side effect. According to the court filings, that was a documented business decision. And now, that decision is being challenged in court.