The growth is related to the aging of the population in part, so some of it is unavoidable by virtue of the fact that we are getting older and our bodies are breaking down. However, there are important things we can do--for example, to screen early for the cancers. Colorectal screening is a perfect example of that. In addition, looking at healthier lifestyles and adopting healthier behaviours mitigates risk.
There are so many contributing factors to the increasing rate of cancers. There are definitely lifestyle factors. We also know that infectious agents are a contributor--HPV. There was recently an article saying that there may be bacterial aspects in colorectal cancer.
I think we're unpacking a very complex set of diseases; therefore, action on the prevention side and on the screening side is probably the most important area where we can have an impact.