You used to think you were addicted to your phone. You'd said it yourself, casually, probably while scrolling Instagram at 1 a.m. on a work night - "I'm literally addicted to this thing." But then a neuroscientist came along and said, politely but firmly, that you probably aren't. Not clinically, anyway. And that the word "addiction" might actually be making things worse.

The $6 Million Question

Here's the scene: a Los Angeles courtroom, March 2026. A jury awards over $6 million in damages to a young woman who argued that Instagram and YouTube were essentially engineered to hijack her developing brain. Meta and Google were found liable. It was the first time a jury treated social media apps as defective products - designed, the argument went, to be addictive on purpose.

Two weeks later, Dar Meshi, a neuroscientist at Michigan State University who has spent years scanning people's brains while they receive social rewards, published a commentary in Nature asking a rather inconvenient question: can we actually call this addiction? The answer, frustratingly, is "not yet" (Meshi, 2026).

The Problem With the A-Word

The issue isn't that social media can't mess with your head. It absolutely can. Your brain's dopamine system - that ancient reward circuit built for finding food and mates - responds to likes and notifications with the same anticipatory fizz it gets from a slot machine. Neuroimaging studies have shown that heavy social media users display brain activation patterns unsettlingly similar to those seen in substance use disorders: heightened reward circuitry when anticipating the next scroll, diminished grey matter in prefrontal regions responsible for impulse control.

The problem is diagnostic. Social media "addiction" doesn't appear in the DSM-5 or the ICD-11 - the two hefty manuals that psychiatrists consult before officially declaring that something is wrong with you. Gambling disorder made the cut. Gaming disorder squeezed in. Social media? Still waiting in the corridor, filling out forms.

Meshi's argument is that the research, while voluminous, is a bit of a mess. Prevalence estimates range wildly from 5% to 25% depending on which scale you use, which country you're in, and how generously you define "problematic." There's no agreed-upon diagnostic threshold, no standardised instrument, and rather too many studies relying on undergraduates filling out questionnaires between lectures.

Addicted, or Just Very, Very Habitual?

This is where it gets properly interesting. A 2025 study in Scientific Reports found that most Instagram users overestimate their own addiction. What they actually have, the researchers argued, are deeply entrenched habits - the automatic thumb-to-app motion that happens before conscious thought intervenes. Addiction and habit look similar from the outside, but they're different beasts neurologically.

And here's the kicker: simply believing you're addicted appears to make things worse. When researchers framed frequent Instagram use as an "addiction" rather than a "habit," participants reported feeling less in control and more self-blame. The label itself becomes part of the problem. It's a bit like telling someone they're drowning when they're actually just in the shallow end - suddenly they start thrashing.

A 2025 paper proposing formal diagnostic criteria for "Social Media Use Disorder" tried to bridge the gap, integrating features specific to social media - like fear of missing out and preference for online social interaction - with existing DSM-5 and ICD-11 frameworks. It's a step, but without buy-in from bodies like the American Psychiatric Association, it remains a proposal rather than a prescription.

Why This Matters Beyond Semantics

You might think this is just academics arguing over terminology while the rest of us doomscroll into oblivion. But the stakes are genuinely high. Courts are awarding millions based on the premise that these platforms are addictive. The U.S. Surgeon General has called for warning labels on social media. Legislation is being drafted. All of this rests on a clinical concept that hasn't been formally defined.

Meshi isn't saying social media is harmless. His own research has shown that people who report excessive use demonstrate the same impaired decision-making patterns as substance addicts. The neural overlap is real. But science, when it's working properly, moves slower than courtrooms and op-ed pages. It insists on agreed-upon criteria, reproducible results, and the sort of methodological rigour that doesn't make for good headlines.

The brain's relationship with your phone is complicated, poorly understood, and probably not well served by borrowing terminology from heroin research without doing the homework first. Which is, when you think about it, a very human problem: we reached for the nearest label before we'd finished the experiment.

References:

1. Meshi, D. (2026). Is social media addictive? Why a formal diagnosis is still out of reach. Nature, 652(8109), 276. https://doi.org/10.1038/d41586-026-01023-8

2. Montag, C., Wegmann, E., Sariyska, R., Demetrovics, Z., & Brand, M. (2023). Neurobiological risk factors for problematic social media use as a specific form of Internet addiction: A narrative review. Frontiers in Psychiatry. PMCID: PMC10251362

3. Bickham, D. S. (2025). Overestimates of social media addiction are common but costly. Scientific Reports, 15, 39388. https://doi.org/10.1038/s41598-025-27053-2

4. Truzoli, R., Palumbo, C., Ferranti, L., & Crocamo, C. (2025). Toward the classification of social media use disorder: Clinical characterization and proposed diagnostic criteria. Addictive Behaviors Reports. https://doi.org/10.1016/j.abrep.2025.100603

5. Meshi, D., Elizarova, A., Bender, A., & Verdejo-Garcia, A. (2019). Excessive social media users demonstrate impaired decision making in the Iowa Gambling Task. Journal of Behavioral Addictions, 8(1), 169-175. PMID: 30626194

Disclaimer: The image accompanying this article is for illustrative purposes only and does not depict actual experimental results, data, or biological mechanisms.