Cancer expression and growth depends upon the interaction between immune competence, the presence of a carcinogenic factor, the body’s ability to process the toxin and the food ingested. For example, when rats are given a low dose of aflatoxin, which is a very potent carcinogen, cancer expression depends on how much protein the rat consumes. If the rat consumption of its normal amount of protein is reduced from 20% to 5%, the cancer which should have been induced by the aflatoxin does not occur. This relationship between animal protein intake and cancer expression is not new. It has been well documented for human beings by Campbell and Campbell in their book, The China Study. The overall finding is that lower animal protein intake is associated with lower cancer rates.
Thus to reduce cancer risk, reduce animal protein intake and increase intake of plants.
This dietary perspective is superbly shown in the recent leased movie, Forks over knives (2011), which claims that most, if not all, of the degenerative diseases that afflict us can be controlled, or even reversed, by rejecting animal-based and processed foods.
For general guidelines and an evolutionary perspective of diet and health you may want to look at Part III, Self-Care, in our book, Fighting Cancer-A Nontoxic Approach to Treatment.