ABSTRACT
Large international differences in rates of cancer, as well as results from migratory studies that find individuals take on the cancer demographics of the population to which they migrate, suggest a strong role for environmental factors, including diet, on cancer incidence. Dietary carbohydrates may be protective against cancer, as is the case for many studies with dietary fiber. Other research suggests that intake of refined carbohydrates, such as sugars, may be linked to a higher risk of cancer, especially if intake of carbohydrates results in obesity. Finally, recent studies suggest that intake of food with a high glycemic index or glycemic load may be linked to increased risk of certain cancers.
