There is a nice article in the online Reader's Digest page about simple ways to prevent cancer. With so many like-minded guides and lists floating around on the internet, the fresh approach of this particular one was pleasantly suprising.
Taking your multivitamins and calicum with vitamin D are in there as you would expect, but there are plenty of suprising twists on traditional ideas as well, making this list well worth a look.
Here are a couple examples: