2026 Study: How Gaming Addiction Physically Rewires Brain Structure and Chemistry

On January 16, 2026, at the University of Turku (Finland), doctoral student Albert Belmunt Gil successfully defended his dissertation in clinical neuroscience. His work sheds light on the deep neurobiological processes that occur in the head of people suffering from pathological cravings for gambling.

In the course of a large-scale study, scientists compared the indicators of two independent groups: patients diagnosed with gambling addiction and healthy volunteers. For the purity of the experiment, a set of neuroimaging methods was used, which made it possible to assess not only the activity and chemical signals, but also the physical structure of the brain.

Key malfunctions in the brain of a gambling addict

The editors of iGN analysed the scientific work and identified four critical changes found in addicted people:

1. Breakdown of the "brakes": A significant weakening of the connections between the dorsolateral frontal cortex (responsible for control) and the nucleus accumbens (the pleasure center) has been revealed. In practice, this means that even with an understanding of the risks, it is physically more difficult for the player to stop - the "stop" signal simply does not reach the target.
2. Hypersensitivity to triggers: In the dorsal striatum, there is an abnormally strong reaction to any stimuli reminiscent of a game (the sounds of slot machines, the sight of cards, betting advertisements). The mechanism is identical to how the brain of a drug addict reacts to the type of substance.
3. Structural deformities: Physical abnormalities have been found in the fronto-striatal circuit. Scientists are still debating whether this is an innate vulnerability that led to addiction, or whether the brain has "mutated" under the influence of constant stress from games.
4. Chemical imbalance: Problems with neuronal connectivity are directly correlated with serotonin levels, and the acute response to play stimuli is tied to the brain's opioid system.

What does this mean for treatment?

Albert Belmunt Gil is sure that his discovery is a step towards new methods of therapy. The fronto-striatal circuit can become a point of application for non-invasive magnetic stimulation (TMS). Simply put, the activity of problem areas can be corrected by magnetic pulses from the outside.

In addition, data on the role of serotonin and opioids pave the way for the development of more effective drugs. However, the author emphasises that more randomized trials are needed to implement this in clinics.

The Verdict: It is a Disease, not a vice

The main conclusion of the study is of great social importance. Ludomania is not a lack of willpower or promiscuity. These are measurable, physical changes in the parts of the brain responsible for habits, reward, and self-control. Understanding this fact should reduce the stigmatization of addicts and transfer the problem from the plane of moralizing to the plane of evidence-based medicine.