Reviewed by the legal team at Estey & Bomberger, LLP · Updated November 14, 2026
Children and teenagers are especially vulnerable to apps built around rewards. The parts of the brain that handle impulse control and long-term planning are still developing into the mid-20s, while the brain's reward system is highly active in the teen years. In 2023, the U.S. Surgeon General issued an advisory warning about social media's effects on youth mental health.
The lawsuits claim TikTok understood this and designed its app to exploit it. Below are the features at the center of the cases. (Courts have drawn some lines here: claims about the platform's own design choices — such as parental controls, age verification, time limits and account deletion — and failure to warn have been allowed to proceed, while claims based purely on what other users posted are generally barred.)
The Features at the Center of the Lawsuits
The For You feed
TikTok’s recommendation engine studies every pause, replay and swipe to serve the next video most likely to keep a child watching. Lawsuits say it can steer vulnerable kids into “rabbit holes” of dieting, self-harm or hopeless content within a short time.
Endless, autoplaying videos
There is no natural stopping point. The next video starts automatically, and the feed never runs out. Short clips deliver a quick reward over and over, which families say makes it very hard for a developing brain to put the phone down.
Notifications around the clock
Alerts pull kids back into the app — including late at night and during school. Lost sleep is one of the harms TikTok’s own research linked to compulsive use.
Beauty and appearance filters
Filters that slim faces, smooth skin and reshape features set an impossible standard. TikTok knew these filters could harm young users. Alabama’s 2026 settlement bans cosmetic filters for teens there.
Weak age verification
Children under 13 can sign up by typing a false birthday. Courts have allowed claims about weak age verification to move forward.
Weak parental controls & time limits
Lawsuits say TikTok’s screen-time tools are easy to dismiss and did little. Internal documents reported by state attorneys general say its 60-minute prompt cut teen use by about a minute and a half a day.
Barriers to quitting
Families say deleting an account is made confusing and slow, with reminders of what a child will lose. Claims about barriers to account deletion are among those courts have allowed.
Direct messages, LIVE and gifts
Features that let strangers find, message and send virtual gifts to minors have been linked to grooming and sextortion. Utah’s lawsuit over TikTok LIVE survived a motion to dismiss.
What TikTok's Own Research Showed
In October 2024, 14 state attorneys general sued TikTok. Portions of Kentucky's complaint that were supposed to be redacted were made public, and other complaints quoted internal documents. They reported that:
- TikTok determined a user can form a habit after watching 260 videos — which state investigators said can happen in under 35 minutes.
- TikTok’s own research said “compulsive usage correlates with a slew of negative mental health effects,” including loss of sleep and anxiety.
- Its 60-minute screen-time prompt reduced teen use by only about a minute and a half a day; internally, success was measured partly by public trust and press coverage.
- TikTok knew beauty filters could harm young users.
- An internal document quoted in Nebraska’s complaint said “compulsive usage on TikTok is rampant.”
TikTok has said the documents are outdated and taken out of context. Read more in What TikTok Knew.
Why This Matters for Your Case
A product liability case asks whether a product was designed in an unreasonably dangerous way and whether the company warned users about risks it knew about. Evidence that TikTok understood how its features affected kids — and chose not to change them or warn families — is central to proving those claims. Your child's own history matters too: how much they used the app, when it started, how their behavior changed, and the diagnosis and treatment that followed.
If you saw your child change after TikTok took over their days and nights, tell us what happened. Also see our guide to the signs of TikTok addiction.