Strong epidemiological evidence implicates diet in a substantial propo
rtion of cancer cases. Nutritionists largely agree on the attributes o
f a healthy diet for cancer prevention (and also for cardiovascular he
alth). Researchers are now studying specific food components that can
actively suppress the processes involved in carcinogenesis. The most p
otent of these could be used directly for chemoprevention in high-risk
individuals and might even have potential in cancer therapy.