Everybody knows that fast food—an industry that does a swift business in North America—isn't good for you. It's dangerous for your heart and adds on unwanted pounds. Yet in spite of all the evidence of its detriment, the high-fat diet remains a firmly-rooted staple for Americans. In surveys conducted ten years ago, the average American was taking in 40 percent of their protein via fat. This number, says Dr. Carol Greenwood, nutrition expert and associate professor at the University of Toronto's Baycrest Centre for Geriatric Care, has dropped some in the last decade because of an increased awareness of the harm fat causes. But, she adds, “You will still find plenty of people out there with this kind of high fat-intake.”