All I did was put "cancer" and "sugar" into Google and this was one of the first articles to come up.

http://www.mercola.com/article/sugar/sugar_cancer.htm

I also went into a medical database and looked up "ketogenic diet" and "cancer" together. It appears there has been a bit of research, but not much, and the conclusions were mainly "warrants further research."

Does anyone have any more information?