The cancer center I work at sponsors a Relay for Life here, so I donated to them.
Cancer detection and screening has gotten better, as has treatment. We understand so cancer so much better today than we did even 10 years ago. Some of the newer therapies show a lot of promise.
The earlier they can dectect a cancer, the more likely it will be you can cure it. However, there are some things you can do to prevent cancer, even if you are genetically predisposed. Eating a healthy diet that includes at least 26-30 grams of fiber a day is the best way to prevent colorectal cancer. Broccoli, Cauliflour (sp?) cabbage and the like are excellent counter toxins. Exercise, stop smoking (tobacco AND pot) filter water, etc. Small changes to your diet and lifestyle can go a long way to helping stave off cancer.
Women, do a daily breast exam while you shower. Even if you are young.
Sorry for such a long post