Cancer Risk Among Older Adults: Time for Cancer Prevention to Go Silver

Over two-thirds of all new cancers are diagnosed among adults aged >= 60 years. As the number of adults living to older ages continues to increase, so too will the number of new cancer cases. Can we do more as a society to reduce cancer risk and preserve health as adults enter their 60s, 70s, and beyond? Cancer development is a multi-step process involving a combination of factors. Each cancer risk factor represents a component of cancer causation, and opportunities to prevent cancer may exist at any time up to the final component, even years after the first. The characteristics of the community in which one lives often shape cancer risk-related behaviors and exposures over time, making communities an ideal setting for efforts to reduce cancer risk at a population level. A comprehensive approach to cancer prevention at older ages would lower exposures to known causes of cancer, promote healthy social and physical environments, expand the appropriate use of clinical preventive services, and engage older adults in these efforts. The collection of articles in this supplement provide innovative insights for exciting new directions in research and practice to expand cancer prevention efforts for older adults. This brief commentary sets the stage for the papers that follow.