title: Epidemiology and colorectal cancer.
abstract: Data from international sources and from Canada are reviewed concerning the incidence and mortality for colorectal cancer. Nutritional factors are almost certainly relevant in etiology although, with differing sex ratios for different sites of the colon and rectum, it cannot be assumed that they will operate to the same extent throughout the large bowels. The results of studies currently available are conflicting and further study is obviously required.
mesh_terms: D003110:Colonic Neoplasms / Q000453:epidemiology* / Q000209:etiology; D004032:Diet; D006801:Humans; D012004:Rectal Neoplasms / Q000453:epidemiology* / Q000209:etiology; D012737:Sex Factors