Research has demonstrated that cancer is a largely avoidable disease. It
is estimated that more than two-thirds of cancer may be prevented
through lifestyle modification (1). Nearly one-third of these cancer
occurrences can be attributed to diet alone, secondary to our American
diet of high-fat, low-fiber content. Fruit and vegetable consumption
have been consistently shown to reduce the risk of many cancers (2). A
major prevention strategy has been the "5 A Day for Better Health"
program sponsored by the National Cancer Institute (NCI), encouraging
the public to include more fruits and vegetables in their diet.  http://
ohioline.osu.edu/hyg-fact/5000/5050.html