WHY IT MATTERS: Older adults who use or are considering cannabis for conditions like pain, sleep, or anxiety can share this type of research with their physicians to support more informed, evidence-based conversations about long-term safety. CLINICAL OVERVIEW: Emerging longitudinal research is examining whether cumulative cannabis exposure across a lifetime correlates with cognitive outcomes in older adults, including measures of memory, processing speed, and dementia incidence. The findings add to a growing body of literature suggesting that the relationship between cannabis use and cognition in aging populations is more nuanced than earlier animal or short-term human studies implied.