There is an issue of vital importance that most well-meaning parents are not aware of: the modern diet that most children are eating today creates a fertile cellular environment for cancer to emerge at a later age. Trying to prevent breast, prostate, and other cancers as an adult may not be totally possible because most risk factors cannot be changed at this late stage. The bottom line is that in order to have a major impact on preventing cancer we must intervene much earlier, even as early as the first ten years of life. In other words, childhood diets create adult cancers.

Introduction, p. xviii - Disease-Proof Your Child (2005)