Please use this link to access this publication. Abstract Background/objectives Cannabis use among older adults is increasing sharply in the United States. While the risks and benefits of cannabis use remain unclear, it is important to monitor risk factors for use, including low perception of harm. The objective of this study was to estimate recent national trends in perceived risk associated with cannabis use among older adults. Design Trend analysis. Setting/participants A total of 18,794 adults aged 65 and older participating in the 2015–2019 National Survey on Drug Use and Health, a cross-sectional nationally representative survey of non-institutionalized individuals in the United States. Measurements...