[caption id="attachment_72632" align="aligncenter" width="500"] Photo by Niek Doup on Unsplash[/caption] MedicalResearch.com Interview with: [caption id="attachment_72636" align="alignleft" width="200"] Ryan Forrest[/caption] Ryan Forrest Public health doctoral student Dalla Lana School of Public Health University of Toronto MedicalResearch.com: What is the background for this study? Response: Over the past decade, there have been major changes to the gambling landscape across North America, including how accessible gambling is, what products are available, and how aggressively gambling is marketed and promoted. Our study focused on Ontario, where several key policy changes created a natural opportunity to examine potential health impacts. Online gambling was introduced through a government-run platform in 2015. In 2021, federal legislation legalized single-event sports betting, enabling new gambling formats. Then, in April 2022, Ontario became the first and only jurisdiction in Canada to open a competitive private online gambling market, allowing private companies,  including some large multinational operators, to offer and heavily advertise gambling products. Many Ontarians experienced a rapid increase in gambling advertising and visibility following this shift. To understand whether these changes were associated with health harms, we examined contacts to ConnexOntario, the province’s mental health and addictions helpline, for gambling-related problems.