Guide
Brain rot: the word, and what the research says.
Brain rot started as a joke about endless short videos and became Oxford’s Word of the Year. Is your brain really rotting?
In short. “Brain rot” is a cultural word, not a diagnosis. Research on short-form video does find links: in a 2025 analysis of 71 studies, heavier use went with poorer attention and self-control, and somewhat worse stress and anxiety. But almost all of the studies are snapshots. They cannot tell whether the videos cause this, or whether people who already find it hard to focus watch more of them.
Where the word comes from
Oxford University Press named “brain rot” its Word of the Year for 2024, after a public vote of more than 37,000 people. Its definition, in short: the supposed decline of a person’s mind blamed on too much trivial or unchallenging material, now above all online content. Use of the word rose by 230% from 2023 to 2024.
It is older than the internet. Oxford found its first recorded use in 1854, in Henry David Thoreau’s Walden, where he complains that society prefers simple ideas to ones that ask more of us.
What the research has found
Studies of short-form video, the endless vertical feeds of very short clips, have multiplied. Three recent reviews pull them together:
- Attention and self-control. A 2025 meta-analysis in Psychological Bulletin combined 71 studies with 98,299 people. Heavier short-video use went with poorer cognition, most clearly with attention and inhibitory control, the ability to hold back an automatic response. The link was moderate in size, and the same in young people and adults and across platforms.
- Stress and mood. The same analysis found a weak link with poorer mental health, mostly stress and anxiety, and none with body image or self-esteem. A 2026 meta-analysis of 58 studies with 96,676 people found links with stress, boredom, loneliness, anxiety and depression, and no link with positive states such as feeling well.
- Young adults. A 2026 review of 17 studies of people aged 18 to 29 found heavier use going with fragmented attention and weaker executive control. The findings were mixed, and some experiments found short-term improvements in mood.
What the studies cannot tell us
- Cause and effect. Most studies measure people once. A link between short videos and poorer attention can run both ways: restless minds may reach for short videos.
- How much people really watch. Most studies ask people to estimate their own use.
- Lasting damage. None of these reviews shows that a brain “rots”, or that the effects are permanent.
So: the format and poorer focus go together, and nobody has settled why.
What helps
- Watch the format, not only the hours. Short, endless and autoplaying is the pattern the studies are about.
- Give the feed an end. It has no bottom, so decide one before you start: a timer, or a number of videos.
- Add friction. Move the apps off the home screen, log out, or try a grayscale screen.
- Swap one session for something long: a chapter, a long article, a whole film, a podcast on a walk.
- Keep the bedroom for sleep: the phone before bed.
The bad-news version of the same habit: doomscrolling. More steps in how to use your phone less.
No videos, nothing to scroll
There are no videos on Lychnos Ring and nothing to scroll: a line on a small screen, then it goes quiet. It is being built for the small things you would otherwise unlock a phone for. It is in development and makes no health claims.
Sources, read 4 November 2026: Oxford University Press, “Brain rot” named Oxford Word of the Year 2024, 2 December 2024; Nguyen et al., feeds, feelings, and focus: a meta-analysis of short-form video use, Psychological Bulletin, 2025; Tang et al., short-form video use and mental health, a meta-analysis, Journal of Medical Internet Research, 2026; Arouch et al., short-form video, cognitive and mental health outcomes, BMJ Public Health, 2026. General information, not medical advice.
Questions
Is brain rot real?
Not as a medical condition: it is a cultural word, Oxford's Word of the Year 2024. Studies do link heavier short-video use with poorer attention and more stress, but most are snapshots that cannot show that the videos cause it.
What does brain rot mean?
In Oxford's definition, the supposed decline of a person's mental or intellectual state put down to too much trivial or unchallenging material, now especially online content. It is also used for the content itself.