One out of three Americans will get cancer before they die. Who is at the highest risk?

Dr. David Nanus, an oncologist who has been treating cancer patients for over twenty years, says that "If you're obese or overweight, you have an increased incidence in a number of cancers". Nanus also tells CBS news that someone with a family history, someone who smokes, has a high fat diet and does not exercise are in the highest risk category for developing cancer in their lifetime.

According to the American Cancer Institute about one third of cancer deaths in 2006 were related to nutrition, physical inactivity and being overweight or obese -- and could have been prevented.

Nanus also says that "The biggest problem is the fear factor. People are so afraid of being diagnosed with cancer they wait. Even waiting three months can mean a difference between life and death.

I just took the Great American Health Challenge -- an on-line quiz offered by the American Cancer Society -- and after just a few minutes of answering a few questions about my age; weight; height; family history; and eating drinking, smoking, and exercise habits, up popped my very own Health Action Plan.

My plan was quite revealing and listed both the good and not-so-good facts about my lifestyle.

I learned that my weight is normal -- whew! -- and that I seem to have an active enough fitness routine. More is always better, though, I was informed. I digested the fact that I don't eat enough whole grains and probably need more low-fat dairy in my diet. I was commended for not smoking and not drinking. And I was encouraged to limit sugars because they are high in calories and low in nutritional content.

My plan came to me ready to print so I can take it to my next medical appointment where my physician can help guide me toward healthier living.

American Cancer Society experts say the Great American Health Challenge can help those who take it to lower their risk of cancer. Get checked, get moving, nourish your body, and quit smoking, they say.

It only takes five minutes to get started. So click here and start now.