Recent attention has turned to opioid use disorder (OUD) and other substance use disorders (SUDs) as significant and growing health concerns among older adults. Biopsychosocial complications that develop with age, including medical comorbidities and cognitive impairments, contribute to some of the adverse interactions between substance misuse and the aging brain. This webinar will focus on how professionals can effectively work at the intersection of aging, mental health, and substance use, with a specific emphasis on opioid use disorder. Participants will learn practical strategies for assessing, diagnosing, treating, and supporting older clients with OUD or other SUDs, and will be empowered to offer compassionate, evidence-informed, and age-responsive care.