CP3 study is a study where volunteers agree to give a tiny sample of blood, answer a few health questions, give your waist measurements and agree to be followed for the next 20 years. This study is for CANCER PREVENTION. Other than giving your blood,everything would be conducted from the comfort of your home, by simply answering a questionnaire every few years. You have to be between 30 and 65 years old and never have been diagnosed with cancer. If you've ever wondered how you can help prevent future cancers for millions, this is how you can help! For more info go to www.cancer.org/cps3