Interesting article on cancer diet and its cure :
http://www.cancertutor.com/Cancer/RawFood.html
Author's quote: A long-time and highly reliable friend of mine (in fact, my wife and I had our wedding reception at her home more than 35 years ago), told me about her friend's father, who completely cured his throat cancer with carrot juice. In other words, he ate nothing and drank nothing but carrot juice and natural water.
So the question would be : If cancer can be cured by this diet, can we use the same to prevent cancer and other diseases ??