Debt, Self-Harm and Comorbidity Drive Suicide Risk in Gambling Disorder

Gambling disorder has long been recognized as one of the psychiatric conditions most tightly entangled with suicidal behavior, yet the question of which patients are actually at greatest risk has remained surprisingly difficult to answer. A new retrospective study from a specialized addiction outpatient clinic in Türkiye now offers one of the clearest pictures to date, and its central finding is striking: the factors that usually protect against suicide in the general population appear to lose their power entirely in this group, while a small set of disorder-specific clinical and financial markers dominate the risk profile.

The research, published in BMC Psychiatry by Elif Aktan Mutlu and colleagues at Ankara Etlik City Hospital and the University of Health Sciences, examined the medical records of 342 patients diagnosed with gambling disorder according to DSM-5 criteria. All patients were seen at the same specialized addiction outpatient clinic between September 2023 and December 2025, giving the team a relatively large and clinically well-characterized sample for a condition that often goes undetected in general psychiatric settings. The study was approved by the hospital’s Scientific Research Evaluation and Ethics Committee, and informed consent was obtained from all participants.

The headline number from the analysis is sobering: 13.2 percent of the patients in the sample had made a lifetime suicide attempt related to their gambling. That figure alone underscores the scale of the problem, but what makes the study valuable is the way the researchers dissected the differences between patients with and without a history of gambling-related suicide attempts. They classified patients according to the presence or absence of such attempts, identified through retrospective review of clinical records, and then compared the two groups across sociodemographic, clinical, and financial dimensions.

Gambling severity was measured using the South Oaks Gambling Screen, a widely used self-report instrument that quantifies pathological gambling behavior. In the initial univariable analyses, five factors were significantly associated with gambling-related suicide attempts: higher gambling severity, depression, Cluster B personality disorders, a history of deliberate self-harm, and financial hardship. Each of these is clinically meaningful in its own right, and together they sketch a picture of patients whose gambling has infiltrated both their mental health and their economic lives.

The most technically important part of the study, however, came next. Because univariable analyses cannot disentangle factors that travel together — depressed patients may also be more severely addicted, and severe addiction often brings financial ruin — the researchers ran multivariable logistic regression to identify which factors remained independently associated with suicide attempts after adjustment for the others. Three survived: a history of deliberate self-harm, the presence of psychiatric comorbidity, and a debt-to-monthly-income ratio exceeding 30.

The strength of these associations is remarkable. A history of deliberate self-harm carried an odds ratio of 15.894, with a 95 percent confidence interval of 3.270 to 77.253, meaning patients with such a history had roughly sixteen times the odds of a gambling-related suicide attempt compared with those without one, with the true value likely falling somewhere in that wide interval. Psychiatric comorbidity showed an odds ratio of 14.549 (95 percent CI: 1.799 to 117.650). And the financial marker — owing more than thirty times one’s monthly income — carried an odds ratio of 8.806 (95 percent CI: 1.777 to 43.625). These are large effects by the standards of psychiatric epidemiology, and their convergence on clinical and financial variables rather than demographic ones is the study’s core message.

Perhaps the most counterintuitive finding is what did not matter. Marriage, parenthood, and social support are traditionally considered protective against suicide in the general population, and suicide risk assessment tools routinely weight them heavily. In this sample of patients with gambling disorder, none of these variables was significantly associated with suicide attempts. The authors interpret this as evidence that gambling-related suicide attempts are more closely tied to disorder-specific clinical and financial characteristics than to the sociodemographic factors that guide conventional risk assessment. In other words, a married father with a supportive family is not necessarily safer if his debts have spiraled to thirty times his income and he has a history of self-harm.

The debt-to-income ratio deserves particular attention because it offers something rare in suicide research: a quantifiable, objective threshold. Rather than treating financial hardship as a vague clinical impression, the researchers expressed it as total debt divided by monthly income, in Turkish lira, and found that crossing the threshold of 30 sharply elevated risk. This kind of metric could, in principle, be incorporated directly into routine screening — a clinician asking a patient with gambling disorder about their debts could translate the answer into a concrete risk indicator. The authors suggest that their findings support comprehensive suicide risk assessment in gambling disorder that incorporates self-harm history, psychiatric comorbidity, and financial strain in addition to gambling severity itself.

The study’s design imposes some limits on interpretation. As a retrospective, descriptive, and comparative analysis based on medical records, it can identify associations but cannot establish causation, and the classification of suicide attempts relied on retrospective review of clinical documentation rather than prospective follow-up. The wide confidence intervals around some of the odds ratios reflect the relatively small number of attempters within the sample, a common challenge in suicide research. The authors also note that the published version was shared early to provide faster access to peer-reviewed, accepted research and is subject to further edits before the final Version of Record.

Even with those caveats, the implications are significant for a disorder that is expanding globally alongside legalized online gambling. Gambling disorder is classified among behavioral addictions, and its sufferers frequently present late, after financial and relational damage has already accumulated. If the findings hold up in prospective studies and other populations, they point toward a practical triage strategy: every patient diagnosed with gambling disorder should be asked about past deliberate self-harm, screened for psychiatric comorbidity, and asked to quantify their debt relative to income. The patients who light up all three indicators would be the ones most urgently needing suicide risk intervention — a conclusion that could redirect scarce clinical attention toward those who need it most, and away from the demographic assumptions that this study suggests may quietly fail the very people they are meant to protect.

Subject of Research: Clinical and financial risk factors for suicide attempts in gambling disorder

Article Title: Clinical and financial correlates of suicide attempts among patients with gambling disorder: a retrospective study

Article References: Mutlu, E. A., Turgut Keser, B., Erdem, E., & Şafak, Y. (2026). Clinical and financial correlates of suicide attempts among patients with gambling disorder: a retrospective study. BMC Psychiatry. https://doi.org/10.1186/s12888-026-08478-z

Image Credits: AI Generated

DOI: 10.1186/s12888-026-08478-z

Keywords: gambling disorder, suicide attempt, suicidal behavior, deliberate self-harm, financial debt, debt-to-income ratio, psychiatric comorbidity, behavioral addiction, South Oaks Gambling Screen, DSM-5, risk factors, retrospective study