You have heard that doomscrolling floods your brain with dopamine, then drains it, and that your brain is being rewired. Some of that is on the right track. Some of it is a tidy story that goes further than the evidence.
Here is what the research supports, what it does not, and why it matters for getting out of the habit.
Does doomscrolling release dopamine?
Dopamine may well be involved, but the useful question is what it would be doing.
The common picture is that dopamine is the "pleasure chemical" and each scroll is a small hit of it. The research on this is more specific. Berridge and Robinson argue that "wanting" and "liking" are separate brain systems, and that dopamine drives wanting, not liking.
That fits doomscrolling oddly well. Most people who scroll bad news are not enjoying it. They are pulled to it. Wanting without much liking is exactly that experience.
Source: Berridge & Robinson (2016), American Psychologist.
Why does a feed pull so hard?
One plausible reason is that the reward is uncertain, and dopamine neurons respond most to uncertain rewards.
Fiorillo, Tobler and Schultz found that dopamine neurons respond most strongly to uncertain rewards. Schultz's wider work describes dopamine as a reward prediction error signal: it tracks the gap between what you expected and what you got.
A feed is built from that gap. Most posts are nothing, occasionally one is striking or alarming, and you cannot tell which comes next. Ferster and Skinner's older work on reinforcement found that variable-ratio schedules produce the highest and most persistent response rates.
To be careful: these studies are not about feeds. Applying them to scrolling is a reasonable inference, not something they measured directly.
Source: Fiorillo, Tobler & Schultz (2003), Science; Schultz (2016), Dialogues in Clinical Neuroscience; Ferster & Skinner, Schedules of Reinforcement (1957).
Does doomscrolling deplete dopamine?
There is no finding in the research we rely on that says it does, so "depleted" is the wrong word to take on faith.
The more careful version comes from Anna Lembke's account in Dopamine Nation: after repeated high-dopamine input, a person builds tolerance, and ordinary things feel flatter by comparison. That is a description of a shifted baseline, not an empty tank.
It is a useful frame for why life can feel dull after a heavy scrolling stretch. It is an account from a book, though, not a measurement of anyone's dopamine while they scroll.
Source: Anna Lembke, Dopamine Nation (2021).
Does it increase dopamine?
Possibly during use, in the sense above, but nobody can hand you a number from this evidence.
One study did look at brain activity around phones directly. Schmitgen and colleagues scanned 25 young adults after 72 hours of smartphone restriction and found that responses to phone pictures changed in reward and craving regions, including the nucleus accumbens and anterior cingulate. It is a small study, and it does not measure dopamine itself.
Source: Schmitgen et al. (2025), Computers in Human Behavior.
Is phone addiction about dopamine?
Dopamine is one part of it. The other part is what happens to control.
A 2025 meta-analysis in Psychological Bulletin pooled 71 studies and about 98,299 people. Heavier short-form video use was linked to poorer attention and, most strongly, poorer inhibitory control, and also to more stress and anxiety. This is correlational: it cannot say which way the arrow points.
Smaller studies fit the same direction. In an fMRI study of 56 people, cognitive-control regions deactivated while people watched short videos, most for videos they preferred. In an EEG study of 48 people, a higher short-video addiction tendency went with lower prefrontal theta during an attention task and lower self-control.
So the stronger evidence is less "your reward chemistry is broken" and more "the parts that help you stop are quieter while you scroll, and weaker in heavy users."
Source: Nguyen et al. (2025), Psychological Bulletin; Hong, Su, Zhou, Geng & Hu, NeuroImage; Yan et al. (2024), Frontiers in Human Neuroscience.
Does doomscrolling rewire your brain?
Not in a way anyone has shown, and the honest answer is "associated with differences", not "caused changes".
Wang and colleagues compared 68 college students and found that a mobile-phone-dependent group had lower grey matter volume in frontal control regions and the thalamus than controls. It is small and correlational. It cannot tell you whether the phone changed the brain or whether people with those differences use their phones more.
The better news comes from a randomised trial. Castelo and colleagues blocked mobile internet on the smartphones of 467 participants for two weeks, and sustained attention, mental health and subjective well-being all improved. The attention gain was comparable to about 10 years of age-related decline. Calls and texts still worked, and more nightly sleep was one of the mechanisms.
Whatever "rewiring" means, the trial suggests the effects are not fixed. Two weeks was enough to measure change.
Source: Wang et al. (2016), Frontiers in Psychology; Castelo et al. (2025), PNAS Nexus.
Why do you scroll things that make you feel worse?
One possible explanation is that wanting and liking come apart, and a feed may feed the first one. That is an inference, not something the research has shown.
Most phone checks are also self-started. In an observational study of real-life use, Heitmayer and Lahlou found that about 89% of smartphone interactions were started by the user, not prompted by a notification.
None of this is a character flaw. It is a system that rewards reaching, working as designed.
Source: Heitmayer & Lahlou (2021), Computers in Human Behavior.
What actually helps?
Work with the wanting, not against it.
- Add friction before the urge. Wanting rises in the moment, so decide in daylight. Block or move the apps ahead of time.
- Expect the pull to be strong early. A strong urge is the craving doing what cravings do, not evidence that you are failing.
- Name it. Putting a feeling into words has been shown to reduce amygdala response (Lieberman et al., 2007, Psychological Science). "I want to check, and I do not like what it will show me" is enough.
- Keep one replacement ready. Choosing is another decision, and the peak is a bad time for it.
If you want a voice in the gap, Boredom's Daily Reset is three guided minutes for exactly that moment. It is optional, and the block does most of the work.
The short version
Dopamine is linked to wanting, especially around uncertain rewards, rather than to pleasure, though none of this research measured it during scrolling. "Depletion" and "rewiring" are stronger claims than the research makes.
What it does show is a link between heavy short-form use and weaker attention and self-control, and a trial in which two weeks off mobile internet measurably helped. The pull is real, it is built into the feed, and it is not a verdict on you.