Abstract The increasing prevalence of cannabis use, with an estimated 219 million users globally, underscores the need to examine its potential health impacts. This review focuses on the arrhythmogenic properties of cannabis, particularly considering its active component, tetrahydrocannabinol, and its interactions with the endocannabinoid system. Epidemiological data and multiple studies indicate a significant association between cannabis use and various arrhythmias, particularly atrial fibrillation. The risk is notably higher among younger users and males. Additionally, case reports have linked cannabis use to other arrhythmias such as ventricular tachycardia and ventricular fibrillation, especially in individuals with underlying cardiac abnormalities. This review also discusses the arrhythmogenic potential...