In determining a person’s risk of colon cancer, how much they eat may be more important than what they eat, US researchers report in the American Journal of Epidemiology. As lead investigator Dr. Jessie Satia-Abouta told Reuters Health, “the results of the study suggest that high intakes of total energy--calories--and individual macronutrients--carbohydrates, protein, and fat--may increase risk for colon cancer.”