We really don't know much about antioxidants and cancer prevention.
http://www.cancer.gov/cancertopics/facts...tioxidants
Incidentally, some people claim that cancers can develop more readily in an acidic environment. So in that case, the "best cancer-fighting foods" or "foods which prevent cancer" would be those that balance out the particular individual's pH level or perhaps refraining from those which decrease pH level. http://altered-states.net/barry/update178/index.htm
http://www.cancer.gov/cancertopics/facts...tioxidants
Incidentally, some people claim that cancers can develop more readily in an acidic environment. So in that case, the "best cancer-fighting foods" or "foods which prevent cancer" would be those that balance out the particular individual's pH level or perhaps refraining from those which decrease pH level. http://altered-states.net/barry/update178/index.htm