What does doomscrolling do to your brain?

The honest answer to what doomscrolling does to your brain is less dramatic than the internet would like. There is decent evidence that it lowers your mood in the short term, that it goes along with more distress and worse sleep, and that it hits people who were already struggling hardest. There is very little evidence that it permanently rewires anything. That smaller answer is still worth taking seriously, because a mood dip you repeat forty times a day is not small. (This is general information, not medical advice.)

How does doomscrolling affect your mood?

2 to 4 minutes is enough to lower it, at least for a while. In 2021, researchers showed people either a short burst of pandemic news, through a Twitter feed in one study and a YouTube reaction video in another, or no news at all. Just 2 to 4 minutes of the bad news was enough to lower positive mood straight away, and in the second study it lowered optimism too.^[1] The caveat matters: this was measured immediately afterwards, not weeks later.

The same study had a quietly hopeful twist. People who scrolled through stories of kind acts, on the same platforms, did not suffer the same drop. The problem is not the screen as such. It is a steady diet of threat.

Is doomscrolling bad for mental health?

Yes, it is linked to worse mental health, but the arrow is hard to draw. When psychologists built a scale to measure doomscrolling, they found that people who scored higher also reported lower life satisfaction and wellbeing, and that the link ran through psychological distress.^[2] That was a survey at one point in time, so it cannot tell you whether scrolling causes distress or distressed people scroll more. Probably both.

A stronger design came from a team who asked people every day for 30 days about their media use and their symptoms. Days with more pandemic-related social media were associated with more symptoms of depression and post-traumatic stress, and the association was stronger for people with more severe experiences of childhood maltreatment. The same pattern did not show up for traditional news.^[3] So it is not only what you read. It is how it arrives, endless and personalised, and who is reading it.

We look at the “why” of this, the pull of the feed when you are already anxious, in why do we doomscroll when stressed?

Does doomscrolling make you tired?

Yes, probably, and mostly through sleep. A 2025 study of 663 adults found that doomscrolling was associated with poorer sleep quality, and that part of the link ran through nomophobia, the anxiety of being without your phone.^[4] It was a single survey, so again it shows a link, not a proven cause. But the mechanism is not mysterious. Scrolling late means sleeping later, and reading alarming things in bed is a poor way to settle. Our longer look at whether screen time affects sleep goes through the evidence.

Does doomscrolling make you dumber or affect your memory?

No. No good evidence says it does, permanently. The study most often quoted here is a 2017 paper called “Brain Drain”, whose first experiment began with 548 undergraduates. It found that simply having your own phone on the desk, even face down and silent, reduced performance on tests of working memory and reasoning, and that the cost was largest for the people most dependent on their phones.^[5]

The caveat is a big one. When another team repeated the key experiment in 2022, using the same tasks and conditions, the effect did not appear.^[6] So the fairest reading is that a nearby phone may nibble at your attention, for some people, some of the time. That is a reason to put it in a drawer while you work, not a reason to fear for your intelligence. The same caution applies to the “brain rot” talk, which we untangle in what is brain rot?

Does doomscrolling release dopamine?

No study has settled this in the way the phrase “dopamine hit” implies. Dopamine is involved in anticipating rewards of all kinds, from food to messages, but we could not find research that measures it during doomscrolling and supports the confident claims you see online. The better explanation is behavioural and far better evidenced: feeds pay out unpredictably, and unpredictable rewards are the ones that keep hands moving. We explain that design in why are phones so addictive?

What are the disadvantages of watching your phone all day?

Four, mainly: worse sleep, less movement, lower mood and more scattered attention. Doomscrolling is linked with poorer sleep quality,^[4] a few minutes of bad news on a feed lowers mood straight away,^[1] and hours sitting with a phone are hours not moving, which the UK Chief Medical Officers advise adults and children alike to cut down on by breaking up long periods of inactivity.^[8] A phone in hand all day also crowds out things that are harder to measure: conversation, reading, being outside.

The caveat, and it is a big one: averaged across hundreds of thousands of teenagers, digital technology use explained at most 0.4% of the variation in wellbeing,^[7] so for most people the harm is real but modest, and depends far more on what the phone replaces than on the hours alone. This is general information, not medical advice.

How big is the effect, really?

0.4% at most, on average. The most careful large analysis of teenagers’ technology use, covering 355,358 young people across three big datasets, found the association with wellbeing was negative but explained at most 0.4% of the variation.^[7] That was about digital technology use in general, not doomscrolling in particular, and averages hide people for whom it matters a great deal. But it is a useful corrective to the idea that the phone is quietly destroying everyone.

So where does that leave you? With something practical. The mood cost is real and immediate. The sleep cost is plausible. The long-term brain damage is not established. If a scroll leaves you flatter than before, that is information, and you do not need a brain scan to act on it. If you are wondering whether your own habit has tipped into something more, we look at that in is phone addiction real? and, for a calmer self-check, signs of phone addiction.

And if what you want is simply to stop, we have written a practical guide on how to stop doomscrolling. If you would like something to do with your hands instead, The Anti-Algorithm Audit is our quiet workbook for noticing what your feed is actually feeding you.