Fuelling the shift toward vegetarianism have been the health recommendation of medical research. Study after study has uncovered the same basic truth: Plant foods lower your risk of chronic disease; animal foods increase it. The American Dietetic Association say: "Scientific data suggest positive relationships between a vegetarian diet and reduced risk for several chronic degenerative diseases. This past fall, after reviewing 4,500 studies on diet and cancer, the world Cancer Research fund flatly stated: "We've been running the human biological engine on the wrong fuel." This " wrong fuel " has helped boost the cost of degenerative disease in Canada to an estimated $400 billion a year, according to Bruce Holub, a professor of nutritional science at the University of Guelph.