The next day Nate was all cleaned out and ready for his colonoscopy with Dr. Jon LaPook of New York-Presbyterian Columbia Hospital. "I know you've got a lot of anxiety going into this. I would, too," Dr. Oz tells Nate. "But you ought to see this as any kind of athletic event in your life, any kind of major process that you had to get ready for emotionally and physically. It's the same kind of thing."
Dr. Oz says colon cancer starts as a benign polyp, or growth in the lining of the colon. While not all polyps lead to cancer, those that are precancerous usually develop into cancer in 5 to 15 years. From there they can spread to the liver and beyond.