The American Cancer Society is recruiting for a new 20-year study. It requires that you be between 30 and 65, and have no personal history of cancer. It's a lifestyle study, so "...once you are enrolled we will be contacting you every two years with mailed questionnaires for you to answer. While you may be in the study for many years, we expect the amount of time it will take you to answer a questionnaire to be minimal (about 45 minutes for the follow-up questionnaires)."

Please consider it (and pass the link on to others). Thanks!