Public Health Data Reveals Rising Gambling Disorders Five Years After Murphy Ruling

The 2018 Supreme Court ruling in Murphy v. National Collegiate Athletic Association eliminated the federal ban on sports betting that had stood since 1992, and this shift opened the door for states to legalize and regulate the activity on their own terms. Thirty-nine states plus the District of Columbia have since authorized sports betting in some form, with many launching online platforms and retail sportsbooks that expanded access dramatically over the following years.

Observers tracking health metrics note that the expansion coincided with measurable increases in certain gambling-related issues, particularly as mobile apps made placing bets as simple as checking a phone. Research groups began compiling data on these patterns, and by mid-2026 clear trends had emerged from multiple states that had moved quickly to legalize.

Diagnosis Rates Climb Sharply in Legalized States

A June 2026 study from Epic Research documented that gambling disorder diagnoses rose more than 60 percent in states that legalized sports betting compared with states that maintained restrictions. The analysis examined medical claims data across thousands of patients and found the uptick appeared most pronounced among younger adults who gained easy access through smartphone-based wagering. Experts reviewing the figures pointed to the convenience of in-game betting features and constant promotional offers as contributing factors that encouraged higher frequency of play.

Those patterns aligned with earlier warnings from public health officials who had anticipated potential spikes once the activity moved from underground markets into mainstream digital channels. States that introduced sports betting between 2018 and 2021 showed the steepest climbs, while states with later or more limited rollouts recorded smaller but still notable gains. The data indicated that the increase was not uniform across all demographics, with men between ages 21 and 35 accounting for a disproportionate share of new diagnoses.

Broader Financial and Social Strain Surfaces

Additional studies examined downstream effects beyond clinical diagnoses, and researchers identified correlations between expanded sports betting access and rises in loan defaults as well as reports of intimate partner violence. One analysis linked higher betting volumes in newly legalized markets to increased financial distress among households that reported problem gambling behaviors. Credit reporting agencies observed upticks in delinquency rates in several states shortly after major sportsbooks began aggressive advertising campaigns.

Domestic violence hotlines and law enforcement agencies in multiple jurisdictions recorded parallel increases in incidents tied to gambling-related financial arguments. While causation remains difficult to isolate in observational data, the timing of these spikes matched the periods when sports betting revenue and participation numbers grew most rapidly. Public health departments in states such as New Jersey, Pennsylvania, and Illinois began allocating additional resources to addiction counseling programs as case volumes climbed.

By August 2026, several state legislatures had convened hearings to review these health and social indicators, and regulators discussed possible adjustments to advertising rules and responsible gambling requirements. Some states implemented mandatory spending limits or enhanced self-exclusion tools, while others explored additional taxes on operators to fund treatment services. The Murphy decision itself did not prescribe any particular regulatory framework, leaving each state to determine its own approach to consumer protections.

Research Continues to Track Long-Term Patterns

Longitudinal studies now underway aim to separate the effects of sports betting legalization from other societal changes that occurred during the same period, including shifts in mental health reporting and economic pressures. Preliminary findings suggest that states with stronger regulatory oversight and dedicated prevention funding experienced somewhat slower growth in disorder diagnoses, although rates still rose across the board. Researchers continue to examine whether certain bet types, such as live in-play wagering, carry higher risk profiles than traditional pre-game bets.

Medical professionals note that early intervention remains critical, and many clinics have expanded screening questions during routine visits to catch emerging issues before they escalate. Insurance providers have also updated coverage guidelines in some regions to include more comprehensive behavioral health support for gambling-related conditions. The cumulative data collected since 2018 provides a growing evidence base for policymakers evaluating future regulatory decisions.

Conclusion

Five years after the Murphy ruling opened the market, the public health record shows clear increases in gambling disorder diagnoses along with associated financial and relational challenges in states that legalized sports betting. The June 2026 study and related research on loan defaults and intimate partner violence offer concrete metrics that continue to inform ongoing policy discussions. As more states refine their regulatory approaches, the long-term trajectory of these trends will depend on the effectiveness of prevention measures and treatment access implemented in the years ahead.