http://www.scientificamerican.com/article/studies-clash-over-causes-of-cancer/
A recent study reported in Nature Magazine and in Scientific American suggests that up to 90% of all types of cancers are due to personal choices and environmental factors. These include diet, exercise, smoking and exposure to radiation and other carcinogens rather than just "bad luck" as some other studies have suggested. If interested in this study, just click on the above link.
