What is social media harm litigation?

Social media harm litigation is the name given to the lawsuits now underway against the companies behind Instagram, Facebook, TikTok, Snapchat, and YouTube. The people and governments bringing these cases argue that the platforms were designed, through features such as endless scrolling, algorithmic feeds, and notifications that pull users back, to keep young people online. They further argue that this design contributed to serious harm, including depression, anxiety, eating disorders, and, in some families, self harm or suicide.

These are not cases about any single post. They are cases about the design of the products themselves.

Where the cases are being heard

Most of the individual lawsuits have been gathered into one federal court, the multidistrict litigation known as MDL 3047, before Judge Yvonne Gonzalez Rogers in the Northern District of California. California coordinates a separate, parallel set of cases, called JCCP 5255, in Los Angeles County Superior Court before Judge Carolyn B. Kuhl.

Reuters reported that more than 3,000 cases have been centralized before Judge Rogers, with a second group of more than 3,300 cases pending in Los Angeles state court, largely brought by individuals (Reuters). Roughly 1,200 school districts have filed their own claims.

The central legal question

The cases turn on one main idea: that platforms can be held responsible for defective design even when the harmful content was posted by other users, not by the company.

A federal law called Section 230 has long shielded platforms from liability for what their users post. The companies argue that changing how a feed is ranked or how notifications are sent would still be covered by that shield. The families and states suing them argue the opposite: that the feed itself, and the design choices behind it, are the platform’s own product, not a user’s speech.

That question has not been settled. In August 2026, a federal appeals court declined to decide it early, sending the immunity question back to be reviewed after trials reach final judgments (Cornell Law holds the statute’s text).

Why this matters now

In March 2026, a Los Angeles jury returned the first verdict holding platforms liable for this kind of design, ordering Meta and Google’s YouTube to pay $6 million to a young woman who said she became addicted as a child (NPR). Later that same year, Meta reached a multibillion dollar settlement with nearly all U.S. states, though that resolved only the states’ claims, not the lawsuits brought by individual families.

The public health backdrop is well documented. The U.S. Surgeon General has stated that children and adolescents who spend more than three hours a day on social media face double the risk of mental health problems, and that up to 95 percent of young people aged 13 to 17 use a social media platform (U.S. Surgeon General).

What this site does and does not do

Addiction Advocates explains these developments in plain language and points to the underlying reporting and records. It does not give legal advice, and it cannot tell any family whether they have a claim. A claim depends on facts specific to each person, and only a lawyer reviewing those facts can form a view.