 when treatment works best. For me, screening was simple and quick. It was no big deal except for the huge sense of relief you feel afterwards. There are several tests that you can choose from. If you're 50 or older, you should talk to your doctor. Decide which one's right for you. Take control. Do everything you can to prevent colon cancer. Screening saves lives. It could really save your life. For more information, call 1-800-CDC-INFO. A message from the U.S. Department of Health and Human Services.