I am on a 3-year schedule for for a colonoscopy, which will be in Jan 08 again. I am a survivor of thyroid cancer, and also of non-Hodgkins lymphoma. The lymphoma is not curable, but is treatable.
Being active helps in many ways...makes you stronger, and helps your mental outlook as well.
For the record, I am 55. I was diagnosed with lymphoma at 39.