and Endometrial Cancer: Aetiological and Epi­ demiological Relationships (1989) and Causation and Prevention of Human Cancer (1990). At the time of the 1985 symposium a workshop was organized in conjunction with IUNS to formulate a set of dietary guidelines for the prevention of human cancer. Those guidelines were published inNutrition and Cancer, but since then there has been a massive increase in information on diet and cancer and so it was decided that in 1991 we would again have a symposium and an associated workshop on public education on diet and cancer. The symposium was structured into a number of sections, the first of which included a review of the various sets of published guidelines together with general background papers on dietary carcinogens, anticarcinogens (particularly the vitamins) and the value of animal models in studying diet and human cancer.