Analysis of U.S. Health Records Shows Rise in Gambling Disorder Diagnoses in Legalized Sports Betting States

Researchers examined health records covering more than 197 million U.S. adults and discovered that problem gambling diagnoses climbed more than 60 percent in states where sports betting has been legalized while those same diagnoses fell 29 percent in states that kept the activity off limits, and this pattern emerged clearly in data gathered through early 2026. Observers note the timing aligns with the continued rollout of mobile sportsbooks and retail betting locations across multiple jurisdictions during the preceding years, yet the overall share of adults receiving such diagnoses stays small even after the measured increases.

Study Scope and Key Measurements

The analysis pulled de-identified electronic health records from a broad national sample and tracked diagnosis codes tied to gambling disorder across two groups of states, one that permitted sports betting and one that did not. Data indicates the rise in the legalized cohort reached above 60 percent while the non-legalized group recorded the 29 percent drop, and experts who reviewed the figures point to expanded access through apps and in-person venues as the primary factor driving the divergence. Those who compiled the numbers also examined monthly trends through June 2026 and found the gap between the two groups widened steadily after additional states activated legal markets in 2024 and 2025.

Age-Specific Patterns in the Data

Young adults between 18 and 29 years old showed the steepest movement, with diagnosis rates doubling inside the legalized states while rates in the comparison states remained flat or declined. Researchers observed that this age band accounts for a disproportionate share of new sports betting accounts, and the health-record evidence suggests the combination of targeted marketing and 24-hour mobile access may concentrate exposure among that demographic. Although the absolute number of diagnoses remains modest relative to the total adult population, the doubling within this cohort stands out as the most pronounced shift captured in the study.

State-by-State Comparisons and Broader Context

States that introduced legal sports betting after the 2018 Supreme Court decision appear together in the group showing the 60-plus percent increase, whereas states that maintained existing restrictions or never authorized the activity sit in the group showing the decline. The report links the difference directly to the presence or absence of regulated betting platforms rather than to changes in screening practices or diagnostic criteria, and it notes that overall diagnosis rates stayed low across the entire sample even as the relative change proved sizable. Observers who track public-health metrics add that many individuals experiencing gambling-related harm never receive a formal diagnosis, so the recorded figures likely understate the full scope of the issue.

Report Conclusions on Access and Outcomes

The authors emphasize that expanded legal access correlates with higher diagnosis counts while restricted environments show the opposite movement, and they present the state-level contrast as evidence that policy decisions on legalization carry measurable population-level effects. Data from the 197-million-person cohort provides a large enough base for stable comparisons, yet the study stops short of claiming causation and instead highlights the consistent association between market expansion and diagnosis growth. Those reviewing the findings note the results arrive at a moment when several additional states continue to weigh legalization measures ahead of the 2026 election cycle.

Implications for Ongoing Monitoring

Public-health researchers and state regulators now have a clearer baseline for tracking future changes, and the same health-record infrastructure could support follow-up analyses once more states adjust their betting policies. The report recommends continued surveillance of diagnosis trends among younger adults in particular, because the doubling observed in the 18-to-29 group may signal emerging patterns that warrant targeted prevention efforts. Figures released alongside the main analysis also break down results by region, revealing that states with the longest-running legal markets posted some of the largest absolute increases even though percentage growth tapered after the initial surge.

Conclusion

The single study of more than 197 million records supplies one of the largest-scale views yet on how sports-betting legalization intersects with gambling-disorder diagnoses, and it supplies concrete numbers for policymakers who must weigh economic benefits against public-health considerations. As states continue to refine regulations through the remainder of 2026, the documented 60 percent rise in legalized jurisdictions and the 29 percent drop elsewhere offer a factual reference point rather than a forecast, and subsequent analyses will determine whether the patterns hold or shift as markets mature.