WHY IT MATTERS: Older adults who have used cannabis throughout their lives, or who are considering it now for pain, sleep, or anxiety, can have a more informed conversation with their physician without the assumption that cognitive decline is an inevitable consequence. CLINICAL OVERVIEW: Emerging research from major academic institutions is challenging longstanding assumptions that cannabis use accelerates cognitive aging or increases dementia risk in older populations. The data suggest that lifetime exposure to cannabis, when examined in older adult cohorts, does not appear to correlate with measurable declines in cognitive function or elevated dementia incidence.