The Cohort Study of the CPS-3 is a long-term research project aimed at understanding the causes of cancer and other diseases. It involves tracking the health and lifestyle of participants over time to gather data on various factors, such as diet, exercise, and environmental exposures. Participants in the study are primarily recruited from the American Cancer Society and are asked to complete surveys and provide biological samples. The findings from the CPS-3 study are expected to contribute valuable insights into cancer prevention and treatment strategies, ultimately improving public health outcomes.