Colorectal cancer is the third most commonly diagnosed form of cancer after prostate and lung cancers for men, and the second most common cancer after breast cancer for women, across OECD countries. Colorectal cancer incidence is high in Korea, the Slovak Republic, Hungary, Denmark and the Netherlands at 40 or more cases per 100 000 population while it is low in Mexico, Greece, Chile and Turkey at less than half this rate. Incidence is significantly higher for men than women across countries. There are several factors that place certain individuals at increased risk for the disease, including age, ulcerative colitis, a personal or family history of colorectal cancer or polyps, and lifestyle factors such as a diet high in fat and low in fibre, lack of physical activity, obesity, and tobacco and alcohol consumption.