Effect of Dietary Protein and Methionine Supplementation on Mammary Tumorigenesis

Breast cancer incidence had not changed in five decades, but recently increased from one of eleven to one of nine women in the United States (1). It has been estimated that 75 to 80% of all cancers are preventable (2). Conservatively, Doll and Peto estimate that 35% of all cancers, possibly up to 50% of all breast cancers, may be associated with dietary habits.